1 /*
2 * Copyright (C) 2003 Lars Knoll (knoll@kde.org)
3 * Copyright (C) 2005 Allan Sandfeld Jensen (kde@carewolf.com)
4 * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010 Apple Inc. All rights reserved.
5 * Copyright (C) 2007 Nicholas Shanks <webkit@nickshanks.com>
6 * Copyright (C) 2008 Eric Seidel <eric@webkit.org>
7 * Copyright (C) 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
8 *
9 * This library is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU Library General Public
11 * License as published by the Free Software Foundation; either
12 * version 2 of the License, or (at your option) any later version.
13 *
14 * This library is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * Library General Public License for more details.
18 *
19 * You should have received a copy of the GNU Library General Public License
20 * along with this library; see the file COPYING.LIB. If not, write to
21 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
22 * Boston, MA 02110-1301, USA.
23 */
24
25 #include "config.h"
26 #include "CSSParser.h"
27
28 #include "CSSBorderImageValue.h"
29 #include "CSSCanvasValue.h"
30 #include "CSSCharsetRule.h"
31 #include "CSSCursorImageValue.h"
32 #include "CSSFontFaceRule.h"
33 #include "CSSFontFaceSrcValue.h"
34 #include "CSSGradientValue.h"
35 #include "CSSImageValue.h"
36 #include "CSSImportRule.h"
37 #include "CSSInheritedValue.h"
38 #include "CSSInitialValue.h"
39 #include "CSSLineBoxContainValue.h"
40 #include "CSSMediaRule.h"
41 #include "CSSMutableStyleDeclaration.h"
42 #include "CSSPageRule.h"
43 #include "CSSPrimitiveValue.h"
44 #include "CSSPrimitiveValueCache.h"
45 #include "CSSProperty.h"
46 #include "CSSPropertyNames.h"
47 #include "CSSPropertySourceData.h"
48 #include "CSSQuirkPrimitiveValue.h"
49 #include "CSSReflectValue.h"
50 #include "CSSRuleList.h"
51 #include "CSSSelector.h"
52 #include "CSSStyleRule.h"
53 #include "CSSStyleSheet.h"
54 #include "CSSTimingFunctionValue.h"
55 #include "CSSUnicodeRangeValue.h"
56 #include "CSSValueKeywords.h"
57 #include "CSSValueList.h"
58 #include "Counter.h"
59 #include "Document.h"
60 #include "FloatConversion.h"
61 #include "FontFamilyValue.h"
62 #include "FontValue.h"
63 #include "HTMLParserIdioms.h"
64 #include "HashTools.h"
65 #include "MediaList.h"
66 #include "MediaQueryExp.h"
67 #include "Page.h"
68 #include "Pair.h"
69 #include "Rect.h"
70 #include "RenderTheme.h"
71 #include "ShadowValue.h"
72 #include "WebKitCSSKeyframeRule.h"
73 #include "WebKitCSSKeyframesRule.h"
74 #include "WebKitCSSTransformValue.h"
75 #include <limits.h>
76 #include <wtf/HexNumber.h>
77 #include <wtf/dtoa.h>
78 #include <wtf/text/StringBuffer.h>
79
80 #if ENABLE(DASHBOARD_SUPPORT)
81 #include "DashboardRegion.h"
82 #endif
83
84 #define YYDEBUG 0
85
86 #if YYDEBUG > 0
87 extern int cssyydebug;
88 #endif
89
90 extern int cssyyparse(void* parser);
91
92 using namespace std;
93 using namespace WTF;
94
95 namespace WebCore {
96
97 static const unsigned INVALID_NUM_PARSED_PROPERTIES = UINT_MAX;
98 static const double MAX_SCALE = 1000000;
99
equal(const CSSParserString & a,const char * b)100 static bool equal(const CSSParserString& a, const char* b)
101 {
102 for (int i = 0; i < a.length; ++i) {
103 if (!b[i])
104 return false;
105 if (a.characters[i] != b[i])
106 return false;
107 }
108 return !b[a.length];
109 }
110
equalIgnoringCase(const CSSParserString & a,const char * b)111 static bool equalIgnoringCase(const CSSParserString& a, const char* b)
112 {
113 for (int i = 0; i < a.length; ++i) {
114 if (!b[i])
115 return false;
116 ASSERT(!isASCIIUpper(b[i]));
117 if (toASCIILower(a.characters[i]) != b[i])
118 return false;
119 }
120 return !b[a.length];
121 }
122
hasPrefix(const char * string,unsigned length,const char * prefix)123 static bool hasPrefix(const char* string, unsigned length, const char* prefix)
124 {
125 for (unsigned i = 0; i < length; ++i) {
126 if (!prefix[i])
127 return true;
128 if (string[i] != prefix[i])
129 return false;
130 }
131 return false;
132 }
133
CSSParser(bool strictParsing)134 CSSParser::CSSParser(bool strictParsing)
135 : m_strict(strictParsing)
136 , m_important(false)
137 , m_id(0)
138 , m_styleSheet(0)
139 , m_valueList(0)
140 , m_parsedProperties(static_cast<CSSProperty**>(fastMalloc(32 * sizeof(CSSProperty*))))
141 , m_numParsedProperties(0)
142 , m_maxParsedProperties(32)
143 , m_numParsedPropertiesBeforeMarginBox(INVALID_NUM_PARSED_PROPERTIES)
144 , m_inParseShorthand(0)
145 , m_currentShorthand(0)
146 , m_implicitShorthand(false)
147 , m_hasFontFaceOnlyValues(false)
148 , m_hadSyntacticallyValidCSSRule(false)
149 , m_defaultNamespace(starAtom)
150 , m_inStyleRuleOrDeclaration(false)
151 , m_selectorListRange(0, 0)
152 , m_ruleBodyRange(0, 0)
153 , m_propertyRange(UINT_MAX, UINT_MAX)
154 , m_ruleRangeMap(0)
155 , m_currentRuleData(0)
156 , m_data(0)
157 , yy_start(1)
158 , m_lineNumber(0)
159 , m_lastSelectorLineNumber(0)
160 , m_allowImportRules(true)
161 , m_allowNamespaceDeclarations(true)
162 {
163 #if YYDEBUG > 0
164 cssyydebug = 1;
165 #endif
166 CSSPropertySourceData::init();
167 }
168
~CSSParser()169 CSSParser::~CSSParser()
170 {
171 clearProperties();
172 fastFree(m_parsedProperties);
173
174 delete m_valueList;
175
176 fastFree(m_data);
177
178 fastDeleteAllValues(m_floatingSelectors);
179 deleteAllValues(m_floatingSelectorVectors);
180 deleteAllValues(m_floatingValueLists);
181 deleteAllValues(m_floatingFunctions);
182 }
183
lower()184 void CSSParserString::lower()
185 {
186 // FIXME: If we need Unicode lowercasing here, then we probably want the real kind
187 // that can potentially change the length of the string rather than the character
188 // by character kind. If we don't need Unicode lowercasing, it would be good to
189 // simplify this function.
190
191 if (charactersAreAllASCII(characters, length)) {
192 // Fast case for all-ASCII.
193 for (int i = 0; i < length; i++)
194 characters[i] = toASCIILower(characters[i]);
195 } else {
196 for (int i = 0; i < length; i++)
197 characters[i] = Unicode::toLower(characters[i]);
198 }
199 }
200
setupParser(const char * prefix,const String & string,const char * suffix)201 void CSSParser::setupParser(const char* prefix, const String& string, const char* suffix)
202 {
203 int length = string.length() + strlen(prefix) + strlen(suffix) + 2;
204
205 fastFree(m_data);
206 m_data = static_cast<UChar*>(fastMalloc(length * sizeof(UChar)));
207 for (unsigned i = 0; i < strlen(prefix); i++)
208 m_data[i] = prefix[i];
209
210 memcpy(m_data + strlen(prefix), string.characters(), string.length() * sizeof(UChar));
211
212 unsigned start = strlen(prefix) + string.length();
213 unsigned end = start + strlen(suffix);
214 for (unsigned i = start; i < end; i++)
215 m_data[i] = suffix[i - start];
216
217 m_data[length - 1] = 0;
218 m_data[length - 2] = 0;
219
220 yy_hold_char = 0;
221 yyleng = 0;
222 yytext = yy_c_buf_p = m_data;
223 yy_hold_char = *yy_c_buf_p;
224 resetRuleBodyMarks();
225 }
226
parseSheet(CSSStyleSheet * sheet,const String & string,int startLineNumber,StyleRuleRangeMap * ruleRangeMap)227 void CSSParser::parseSheet(CSSStyleSheet* sheet, const String& string, int startLineNumber, StyleRuleRangeMap* ruleRangeMap)
228 {
229 setStyleSheet(sheet);
230 m_defaultNamespace = starAtom; // Reset the default namespace.
231 m_ruleRangeMap = ruleRangeMap;
232 if (ruleRangeMap) {
233 m_currentRuleData = CSSRuleSourceData::create();
234 m_currentRuleData->styleSourceData = CSSStyleSourceData::create();
235 }
236
237 m_lineNumber = startLineNumber;
238 setupParser("", string, "");
239 cssyyparse(this);
240 m_ruleRangeMap = 0;
241 m_currentRuleData = 0;
242 m_rule = 0;
243 }
244
parseRule(CSSStyleSheet * sheet,const String & string)245 PassRefPtr<CSSRule> CSSParser::parseRule(CSSStyleSheet* sheet, const String& string)
246 {
247 setStyleSheet(sheet);
248 m_allowNamespaceDeclarations = false;
249 setupParser("@-webkit-rule{", string, "} ");
250 cssyyparse(this);
251 return m_rule.release();
252 }
253
parseKeyframeRule(CSSStyleSheet * sheet,const String & string)254 PassRefPtr<CSSRule> CSSParser::parseKeyframeRule(CSSStyleSheet *sheet, const String &string)
255 {
256 setStyleSheet(sheet);
257 setupParser("@-webkit-keyframe-rule{ ", string, "} ");
258 cssyyparse(this);
259 return m_keyframe.release();
260 }
261
isColorPropertyID(int propertyId)262 static inline bool isColorPropertyID(int propertyId)
263 {
264 switch (propertyId) {
265 case CSSPropertyColor:
266 case CSSPropertyBackgroundColor:
267 case CSSPropertyBorderBottomColor:
268 case CSSPropertyBorderLeftColor:
269 case CSSPropertyBorderRightColor:
270 case CSSPropertyBorderTopColor:
271 case CSSPropertyOutlineColor:
272 case CSSPropertyTextLineThroughColor:
273 case CSSPropertyTextOverlineColor:
274 case CSSPropertyTextUnderlineColor:
275 case CSSPropertyWebkitBorderAfterColor:
276 case CSSPropertyWebkitBorderBeforeColor:
277 case CSSPropertyWebkitBorderEndColor:
278 case CSSPropertyWebkitBorderStartColor:
279 case CSSPropertyWebkitColumnRuleColor:
280 case CSSPropertyWebkitTextEmphasisColor:
281 case CSSPropertyWebkitTextFillColor:
282 case CSSPropertyWebkitTextStrokeColor:
283 return true;
284 default:
285 return false;
286 }
287 }
288
parseColorValue(CSSMutableStyleDeclaration * declaration,int propertyId,const String & string,bool important,bool strict)289 static bool parseColorValue(CSSMutableStyleDeclaration* declaration, int propertyId, const String& string, bool important, bool strict)
290 {
291 if (!string.length())
292 return false;
293 if (!isColorPropertyID(propertyId))
294 return false;
295 CSSParserString cssString;
296 cssString.characters = const_cast<UChar*>(string.characters());
297 cssString.length = string.length();
298 int valueID = cssValueKeywordID(cssString);
299 bool validPrimitive = false;
300 if (valueID == CSSValueWebkitText)
301 validPrimitive = true;
302 else if (valueID == CSSValueCurrentcolor)
303 validPrimitive = true;
304 else if ((valueID >= CSSValueAqua && valueID <= CSSValueWindowtext) || valueID == CSSValueMenu
305 || (valueID >= CSSValueWebkitFocusRingColor && valueID < CSSValueWebkitText && !strict)) {
306 validPrimitive = true;
307 }
308
309 CSSStyleSheet* stylesheet = static_cast<CSSStyleSheet*>(declaration->stylesheet());
310 if (!stylesheet || !stylesheet->document())
311 return false;
312 if (validPrimitive) {
313 CSSProperty property(propertyId, stylesheet->document()->cssPrimitiveValueCache()->createIdentifierValue(valueID), important);
314 declaration->addParsedProperty(property);
315 return true;
316 }
317 RGBA32 color;
318 if (!CSSParser::parseColor(string, color, strict && string[0] != '#'))
319 return false;
320 CSSProperty property(propertyId, stylesheet->document()->cssPrimitiveValueCache()->createColorValue(color), important);
321 declaration->addParsedProperty(property);
322 return true;
323 }
324
isSimpleLengthPropertyID(int propertyId,bool & acceptsNegativeNumbers)325 static inline bool isSimpleLengthPropertyID(int propertyId, bool& acceptsNegativeNumbers)
326 {
327 switch (propertyId) {
328 case CSSPropertyFontSize:
329 case CSSPropertyHeight:
330 case CSSPropertyWidth:
331 case CSSPropertyMinHeight:
332 case CSSPropertyMinWidth:
333 case CSSPropertyPaddingBottom:
334 case CSSPropertyPaddingLeft:
335 case CSSPropertyPaddingRight:
336 case CSSPropertyPaddingTop:
337 case CSSPropertyWebkitLogicalWidth:
338 case CSSPropertyWebkitLogicalHeight:
339 case CSSPropertyWebkitMinLogicalWidth:
340 case CSSPropertyWebkitMinLogicalHeight:
341 case CSSPropertyWebkitPaddingAfter:
342 case CSSPropertyWebkitPaddingBefore:
343 case CSSPropertyWebkitPaddingEnd:
344 case CSSPropertyWebkitPaddingStart:
345 acceptsNegativeNumbers = false;
346 return true;
347 case CSSPropertyBottom:
348 case CSSPropertyLeft:
349 case CSSPropertyMarginBottom:
350 case CSSPropertyMarginLeft:
351 case CSSPropertyMarginRight:
352 case CSSPropertyMarginTop:
353 case CSSPropertyRight:
354 case CSSPropertyTextIndent:
355 case CSSPropertyTop:
356 case CSSPropertyWebkitMarginAfter:
357 case CSSPropertyWebkitMarginBefore:
358 case CSSPropertyWebkitMarginEnd:
359 case CSSPropertyWebkitMarginStart:
360 acceptsNegativeNumbers = true;
361 return true;
362 default:
363 return false;
364 }
365 }
366
parseSimpleLengthValue(CSSMutableStyleDeclaration * declaration,int propertyId,const String & string,bool important,bool strict)367 static bool parseSimpleLengthValue(CSSMutableStyleDeclaration* declaration, int propertyId, const String& string, bool important, bool strict)
368 {
369 const UChar* characters = string.characters();
370 unsigned length = string.length();
371 if (!characters || !length)
372 return false;
373 bool acceptsNegativeNumbers;
374 if (!isSimpleLengthPropertyID(propertyId, acceptsNegativeNumbers))
375 return false;
376
377 CSSPrimitiveValue::UnitTypes unit = CSSPrimitiveValue::CSS_NUMBER;
378 if (length > 2 && characters[length - 2] == 'p' && characters[length - 1] == 'x') {
379 length -= 2;
380 unit = CSSPrimitiveValue::CSS_PX;
381 } else if (length > 1 && characters[length - 1] == '%') {
382 length -= 1;
383 unit = CSSPrimitiveValue::CSS_PERCENTAGE;
384 }
385
386 // We rely on charactersToDouble for validation as well. The function
387 // will set "ok" to "false" if the entire passed-in character range does
388 // not represent a double.
389 bool ok;
390 double number = charactersToDouble(characters, length, &ok);
391 if (!ok)
392 return false;
393 if (unit == CSSPrimitiveValue::CSS_NUMBER) {
394 if (number && strict)
395 return false;
396 unit = CSSPrimitiveValue::CSS_PX;
397 }
398 if (number < 0 && !acceptsNegativeNumbers)
399 return false;
400
401 CSSStyleSheet* stylesheet = static_cast<CSSStyleSheet*>(declaration->stylesheet());
402 if (!stylesheet || !stylesheet->document())
403 return false;
404 CSSProperty property(propertyId, stylesheet->document()->cssPrimitiveValueCache()->createValue(number, unit), important);
405 declaration->addParsedProperty(property);
406 return true;
407 }
408
parseValue(CSSMutableStyleDeclaration * declaration,int propertyId,const String & string,bool important,bool strict)409 bool CSSParser::parseValue(CSSMutableStyleDeclaration* declaration, int propertyId, const String& string, bool important, bool strict)
410 {
411 if (parseSimpleLengthValue(declaration, propertyId, string, important, strict))
412 return true;
413 if (parseColorValue(declaration, propertyId, string, important, strict))
414 return true;
415 CSSParser parser(strict);
416 return parser.parseValue(declaration, propertyId, string, important);
417 }
418
parseValue(CSSMutableStyleDeclaration * declaration,int propertyId,const String & string,bool important)419 bool CSSParser::parseValue(CSSMutableStyleDeclaration* declaration, int propertyId, const String& string, bool important)
420 {
421 ASSERT(!declaration->stylesheet() || declaration->stylesheet()->isCSSStyleSheet());
422 setStyleSheet(static_cast<CSSStyleSheet*>(declaration->stylesheet()));
423
424 setupParser("@-webkit-value{", string, "} ");
425
426 m_id = propertyId;
427 m_important = important;
428
429 cssyyparse(this);
430
431 m_rule = 0;
432
433 bool ok = false;
434 if (m_hasFontFaceOnlyValues)
435 deleteFontFaceOnlyValues();
436 if (m_numParsedProperties) {
437 ok = true;
438 declaration->addParsedProperties(m_parsedProperties, m_numParsedProperties);
439 clearProperties();
440 }
441
442 return ok;
443 }
444
445 // color will only be changed when string contains a valid css color, making it
446 // possible to set up a default color.
parseColor(RGBA32 & color,const String & string,bool strict)447 bool CSSParser::parseColor(RGBA32& color, const String& string, bool strict)
448 {
449 // First try creating a color specified by name, rgba(), rgb() or "#" syntax.
450 if (parseColor(string, color, strict))
451 return true;
452
453 CSSParser parser(true);
454 RefPtr<CSSMutableStyleDeclaration> dummyStyleDeclaration = CSSMutableStyleDeclaration::create();
455
456 // Now try to create a color from rgba() syntax.
457 if (!parser.parseColor(dummyStyleDeclaration.get(), string))
458 return false;
459
460 CSSValue* value = parser.m_parsedProperties[0]->value();
461 if (value->cssValueType() != CSSValue::CSS_PRIMITIVE_VALUE)
462 return false;
463
464 CSSPrimitiveValue* primitiveValue = static_cast<CSSPrimitiveValue*>(value);
465 if (primitiveValue->primitiveType() != CSSPrimitiveValue::CSS_RGBCOLOR)
466 return false;
467
468 color = primitiveValue->getRGBA32Value();
469 return true;
470 }
471
parseColor(CSSMutableStyleDeclaration * declaration,const String & string)472 bool CSSParser::parseColor(CSSMutableStyleDeclaration* declaration, const String& string)
473 {
474 ASSERT(!declaration->stylesheet() || declaration->stylesheet()->isCSSStyleSheet());
475 setStyleSheet(static_cast<CSSStyleSheet*>(declaration->stylesheet()));
476
477 setupParser("@-webkit-decls{color:", string, "} ");
478 cssyyparse(this);
479 m_rule = 0;
480
481 return (m_numParsedProperties && m_parsedProperties[0]->m_id == CSSPropertyColor);
482 }
483
parseSystemColor(RGBA32 & color,const String & string,Document * document)484 bool CSSParser::parseSystemColor(RGBA32& color, const String& string, Document* document)
485 {
486 if (!document || !document->page())
487 return false;
488
489 CSSParserString cssColor;
490 cssColor.characters = const_cast<UChar*>(string.characters());
491 cssColor.length = string.length();
492 int id = cssValueKeywordID(cssColor);
493 if (id <= 0)
494 return false;
495
496 color = document->page()->theme()->systemColor(id).rgb();
497 return true;
498 }
499
parseSelector(const String & string,Document * doc,CSSSelectorList & selectorList)500 void CSSParser::parseSelector(const String& string, Document* doc, CSSSelectorList& selectorList)
501 {
502 RefPtr<CSSStyleSheet> dummyStyleSheet = CSSStyleSheet::create(doc);
503
504 setStyleSheet(dummyStyleSheet.get());
505 m_selectorListForParseSelector = &selectorList;
506
507 setupParser("@-webkit-selector{", string, "}");
508
509 cssyyparse(this);
510
511 m_selectorListForParseSelector = 0;
512
513 // The style sheet will be deleted right away, so it won't outlive the document.
514 ASSERT(dummyStyleSheet->hasOneRef());
515 }
516
parseDeclaration(CSSMutableStyleDeclaration * declaration,const String & string,RefPtr<CSSStyleSourceData> * styleSourceData)517 bool CSSParser::parseDeclaration(CSSMutableStyleDeclaration* declaration, const String& string, RefPtr<CSSStyleSourceData>* styleSourceData)
518 {
519 // Length of the "@-webkit-decls{" prefix.
520 static const unsigned prefixLength = 15;
521
522 ASSERT(!declaration->stylesheet() || declaration->stylesheet()->isCSSStyleSheet());
523 setStyleSheet(static_cast<CSSStyleSheet*>(declaration->stylesheet()));
524 if (styleSourceData) {
525 m_currentRuleData = CSSRuleSourceData::create();
526 m_currentRuleData->styleSourceData = CSSStyleSourceData::create();
527 m_inStyleRuleOrDeclaration = true;
528 }
529
530 setupParser("@-webkit-decls{", string, "} ");
531 cssyyparse(this);
532 m_rule = 0;
533
534 bool ok = false;
535 if (m_hasFontFaceOnlyValues)
536 deleteFontFaceOnlyValues();
537 if (m_numParsedProperties) {
538 ok = true;
539 declaration->addParsedProperties(m_parsedProperties, m_numParsedProperties);
540 clearProperties();
541 }
542
543 if (m_currentRuleData) {
544 m_currentRuleData->styleSourceData->styleBodyRange.start = 0;
545 m_currentRuleData->styleSourceData->styleBodyRange.end = string.length();
546 for (Vector<CSSPropertySourceData>::iterator it = m_currentRuleData->styleSourceData->propertyData.begin(), endIt = m_currentRuleData->styleSourceData->propertyData.end(); it != endIt; ++it) {
547 (*it).range.start -= prefixLength;
548 (*it).range.end -= prefixLength;
549 }
550 }
551
552 if (styleSourceData) {
553 *styleSourceData = m_currentRuleData->styleSourceData.release();
554 m_currentRuleData = 0;
555 m_inStyleRuleOrDeclaration = false;
556 }
557 return ok;
558 }
559
parseMediaQuery(MediaList * queries,const String & string)560 bool CSSParser::parseMediaQuery(MediaList* queries, const String& string)
561 {
562 if (string.isEmpty())
563 return true;
564
565 ASSERT(!m_mediaQuery);
566
567 // can't use { because tokenizer state switches from mediaquery to initial state when it sees { token.
568 // instead insert one " " (which is WHITESPACE in CSSGrammar.y)
569 setupParser("@-webkit-mediaquery ", string, "} ");
570 cssyyparse(this);
571
572 bool ok = false;
573 if (m_mediaQuery) {
574 ok = true;
575 queries->appendMediaQuery(m_mediaQuery.release());
576 }
577
578 return ok;
579 }
580
581
addProperty(int propId,PassRefPtr<CSSValue> value,bool important)582 void CSSParser::addProperty(int propId, PassRefPtr<CSSValue> value, bool important)
583 {
584 OwnPtr<CSSProperty> prop(adoptPtr(new CSSProperty(propId, value, important, m_currentShorthand, m_implicitShorthand)));
585 if (m_numParsedProperties >= m_maxParsedProperties) {
586 m_maxParsedProperties += 32;
587 if (m_maxParsedProperties > UINT_MAX / sizeof(CSSProperty*))
588 return;
589 m_parsedProperties = static_cast<CSSProperty**>(fastRealloc(m_parsedProperties,
590 m_maxParsedProperties * sizeof(CSSProperty*)));
591 }
592 m_parsedProperties[m_numParsedProperties++] = prop.leakPtr();
593 }
594
rollbackLastProperties(int num)595 void CSSParser::rollbackLastProperties(int num)
596 {
597 ASSERT(num >= 0);
598 ASSERT(m_numParsedProperties >= static_cast<unsigned>(num));
599
600 for (int i = 0; i < num; ++i)
601 delete m_parsedProperties[--m_numParsedProperties];
602 }
603
clearProperties()604 void CSSParser::clearProperties()
605 {
606 for (unsigned i = 0; i < m_numParsedProperties; i++)
607 delete m_parsedProperties[i];
608 m_numParsedProperties = 0;
609 m_numParsedPropertiesBeforeMarginBox = INVALID_NUM_PARSED_PROPERTIES;
610 m_hasFontFaceOnlyValues = false;
611 }
612
setStyleSheet(CSSStyleSheet * styleSheet)613 void CSSParser::setStyleSheet(CSSStyleSheet* styleSheet)
614 {
615 m_styleSheet = styleSheet;
616 m_primitiveValueCache = document() ? document()->cssPrimitiveValueCache() : CSSPrimitiveValueCache::create();
617 }
618
document() const619 Document* CSSParser::document() const
620 {
621 StyleBase* root = m_styleSheet;
622 while (root && root->parent())
623 root = root->parent();
624 if (!root)
625 return 0;
626 if (!root->isCSSStyleSheet())
627 return 0;
628 return static_cast<CSSStyleSheet*>(root)->document();
629 }
630
validUnit(CSSParserValue * value,Units unitflags,bool strict)631 bool CSSParser::validUnit(CSSParserValue* value, Units unitflags, bool strict)
632 {
633 bool b = false;
634 switch (value->unit) {
635 case CSSPrimitiveValue::CSS_NUMBER:
636 b = (unitflags & FNumber);
637 if (!b && ((unitflags & (FLength | FAngle | FTime)) && (value->fValue == 0 || !strict))) {
638 value->unit = (unitflags & FLength) ? CSSPrimitiveValue::CSS_PX :
639 ((unitflags & FAngle) ? CSSPrimitiveValue::CSS_DEG : CSSPrimitiveValue::CSS_MS);
640 b = true;
641 }
642 if (!b && (unitflags & FInteger) && value->isInt)
643 b = true;
644 break;
645 case CSSPrimitiveValue::CSS_PERCENTAGE:
646 b = (unitflags & FPercent);
647 break;
648 case CSSParserValue::Q_EMS:
649 case CSSPrimitiveValue::CSS_EMS:
650 case CSSPrimitiveValue::CSS_REMS:
651 case CSSPrimitiveValue::CSS_EXS:
652 case CSSPrimitiveValue::CSS_PX:
653 case CSSPrimitiveValue::CSS_CM:
654 case CSSPrimitiveValue::CSS_MM:
655 case CSSPrimitiveValue::CSS_IN:
656 case CSSPrimitiveValue::CSS_PT:
657 case CSSPrimitiveValue::CSS_PC:
658 b = (unitflags & FLength);
659 break;
660 case CSSPrimitiveValue::CSS_MS:
661 case CSSPrimitiveValue::CSS_S:
662 b = (unitflags & FTime);
663 break;
664 case CSSPrimitiveValue::CSS_DEG:
665 case CSSPrimitiveValue::CSS_RAD:
666 case CSSPrimitiveValue::CSS_GRAD:
667 case CSSPrimitiveValue::CSS_TURN:
668 b = (unitflags & FAngle);
669 break;
670 case CSSPrimitiveValue::CSS_HZ:
671 case CSSPrimitiveValue::CSS_KHZ:
672 case CSSPrimitiveValue::CSS_DIMENSION:
673 default:
674 break;
675 }
676 if (b && unitflags & FNonNeg && value->fValue < 0)
677 b = false;
678 return b;
679 }
680
unitFromString(CSSParserValue * value)681 static int unitFromString(CSSParserValue* value)
682 {
683 if (value->unit != CSSPrimitiveValue::CSS_IDENT || value->id)
684 return 0;
685
686 if (equal(value->string, "em"))
687 return CSSPrimitiveValue::CSS_EMS;
688 if (equal(value->string, "rem"))
689 return CSSPrimitiveValue::CSS_REMS;
690 if (equal(value->string, "ex"))
691 return CSSPrimitiveValue::CSS_EXS;
692 if (equal(value->string, "px"))
693 return CSSPrimitiveValue::CSS_PX;
694 if (equal(value->string, "cm"))
695 return CSSPrimitiveValue::CSS_CM;
696 if (equal(value->string, "mm"))
697 return CSSPrimitiveValue::CSS_MM;
698 if (equal(value->string, "in"))
699 return CSSPrimitiveValue::CSS_IN;
700 if (equal(value->string, "pt"))
701 return CSSPrimitiveValue::CSS_PT;
702 if (equal(value->string, "pc"))
703 return CSSPrimitiveValue::CSS_PC;
704 if (equal(value->string, "deg"))
705 return CSSPrimitiveValue::CSS_DEG;
706 if (equal(value->string, "rad"))
707 return CSSPrimitiveValue::CSS_RAD;
708 if (equal(value->string, "grad"))
709 return CSSPrimitiveValue::CSS_GRAD;
710 if (equal(value->string, "turn"))
711 return CSSPrimitiveValue::CSS_TURN;
712 if (equal(value->string, "ms"))
713 return CSSPrimitiveValue::CSS_MS;
714 if (equal(value->string, "s"))
715 return CSSPrimitiveValue::CSS_S;
716 if (equal(value->string, "Hz"))
717 return CSSPrimitiveValue::CSS_HZ;
718 if (equal(value->string, "kHz"))
719 return CSSPrimitiveValue::CSS_KHZ;
720
721 return 0;
722 }
723
checkForOrphanedUnits()724 void CSSParser::checkForOrphanedUnits()
725 {
726 if (m_strict || inShorthand())
727 return;
728
729 // The purpose of this code is to implement the WinIE quirk that allows unit types to be separated from their numeric values
730 // by whitespace, so e.g., width: 20 px instead of width:20px. This is invalid CSS, so we don't do this in strict mode.
731 CSSParserValue* numericVal = 0;
732 unsigned size = m_valueList->size();
733 for (unsigned i = 0; i < size; i++) {
734 CSSParserValue* value = m_valueList->valueAt(i);
735
736 if (numericVal) {
737 // Change the unit type of the numeric val to match.
738 int unit = unitFromString(value);
739 if (unit) {
740 numericVal->unit = unit;
741 numericVal = 0;
742
743 // Now delete the bogus unit value.
744 m_valueList->deleteValueAt(i);
745 i--; // We're safe even though |i| is unsigned, since we only hit this code if we had a previous numeric value (so |i| is always > 0 here).
746 size--;
747 continue;
748 }
749 }
750
751 numericVal = (value->unit == CSSPrimitiveValue::CSS_NUMBER) ? value : 0;
752 }
753 }
754
parseValue(int propId,bool important)755 bool CSSParser::parseValue(int propId, bool important)
756 {
757 if (!m_valueList)
758 return false;
759
760 CSSParserValue* value = m_valueList->current();
761
762 if (!value)
763 return false;
764
765 int id = value->id;
766
767 // In quirks mode, we will look for units that have been incorrectly separated from the number they belong to
768 // by a space. We go ahead and associate the unit with the number even though it is invalid CSS.
769 checkForOrphanedUnits();
770
771 int num = inShorthand() ? 1 : m_valueList->size();
772
773 if (id == CSSValueInherit) {
774 if (num != 1)
775 return false;
776 addProperty(propId, CSSInheritedValue::create(), important);
777 return true;
778 }
779 else if (id == CSSValueInitial) {
780 if (num != 1)
781 return false;
782 addProperty(propId, CSSInitialValue::createExplicit(), important);
783 return true;
784 }
785
786 bool validPrimitive = false;
787 RefPtr<CSSValue> parsedValue;
788
789 switch (static_cast<CSSPropertyID>(propId)) {
790 /* The comment to the left defines all valid value of this properties as defined
791 * in CSS 2, Appendix F. Property index
792 */
793
794 /* All the CSS properties are not supported by the renderer at the moment.
795 * Note that all the CSS2 Aural properties are only checked, if CSS_AURAL is defined
796 * (see parseAuralValues). As we don't support them at all this seems reasonable.
797 */
798
799 case CSSPropertySize: // <length>{1,2} | auto | [ <page-size> || [ portrait | landscape] ]
800 return parseSize(propId, important);
801
802 case CSSPropertyQuotes: // [<string> <string>]+ | none | inherit
803 if (id)
804 validPrimitive = true;
805 else
806 return parseQuotes(propId, important);
807 break;
808 case CSSPropertyUnicodeBidi: // normal | embed | bidi-override | isolate | inherit
809 if (id == CSSValueNormal
810 || id == CSSValueEmbed
811 || id == CSSValueBidiOverride
812 || id == CSSValueWebkitIsolate)
813 validPrimitive = true;
814 break;
815
816 case CSSPropertyPosition: // static | relative | absolute | fixed | inherit
817 if (id == CSSValueStatic ||
818 id == CSSValueRelative ||
819 id == CSSValueAbsolute ||
820 id == CSSValueFixed)
821 validPrimitive = true;
822 break;
823
824 case CSSPropertyPageBreakAfter: // auto | always | avoid | left | right | inherit
825 case CSSPropertyPageBreakBefore:
826 case CSSPropertyWebkitColumnBreakAfter:
827 case CSSPropertyWebkitColumnBreakBefore:
828 if (id == CSSValueAuto ||
829 id == CSSValueAlways ||
830 id == CSSValueAvoid ||
831 id == CSSValueLeft ||
832 id == CSSValueRight)
833 validPrimitive = true;
834 break;
835
836 case CSSPropertyPageBreakInside: // avoid | auto | inherit
837 case CSSPropertyWebkitColumnBreakInside:
838 if (id == CSSValueAuto || id == CSSValueAvoid)
839 validPrimitive = true;
840 break;
841
842 case CSSPropertyEmptyCells: // show | hide | inherit
843 if (id == CSSValueShow ||
844 id == CSSValueHide)
845 validPrimitive = true;
846 break;
847
848 case CSSPropertyContent: // [ <string> | <uri> | <counter> | attr(X) | open-quote |
849 // close-quote | no-open-quote | no-close-quote ]+ | inherit
850 return parseContent(propId, important);
851
852 case CSSPropertyWhiteSpace: // normal | pre | nowrap | inherit
853 if (id == CSSValueNormal ||
854 id == CSSValuePre ||
855 id == CSSValuePreWrap ||
856 id == CSSValuePreLine ||
857 id == CSSValueNowrap)
858 validPrimitive = true;
859 break;
860
861 case CSSPropertyClip: // <shape> | auto | inherit
862 if (id == CSSValueAuto)
863 validPrimitive = true;
864 else if (value->unit == CSSParserValue::Function)
865 return parseShape(propId, important);
866 break;
867
868 /* Start of supported CSS properties with validation. This is needed for parseShorthand to work
869 * correctly and allows optimization in WebCore::applyRule(..)
870 */
871 case CSSPropertyCaptionSide: // top | bottom | left | right | inherit
872 if (id == CSSValueLeft || id == CSSValueRight ||
873 id == CSSValueTop || id == CSSValueBottom)
874 validPrimitive = true;
875 break;
876
877 case CSSPropertyBorderCollapse: // collapse | separate | inherit
878 if (id == CSSValueCollapse || id == CSSValueSeparate)
879 validPrimitive = true;
880 break;
881
882 case CSSPropertyVisibility: // visible | hidden | collapse | inherit
883 if (id == CSSValueVisible || id == CSSValueHidden || id == CSSValueCollapse)
884 validPrimitive = true;
885 break;
886
887 case CSSPropertyOverflow: {
888 ShorthandScope scope(this, propId);
889 if (num != 1 || !parseValue(CSSPropertyOverflowX, important))
890 return false;
891 CSSValue* value = m_parsedProperties[m_numParsedProperties - 1]->value();
892 addProperty(CSSPropertyOverflowY, value, important);
893 return true;
894 }
895 case CSSPropertyOverflowX:
896 case CSSPropertyOverflowY: // visible | hidden | scroll | auto | marquee | overlay | inherit
897 if (id == CSSValueVisible || id == CSSValueHidden || id == CSSValueScroll || id == CSSValueAuto ||
898 id == CSSValueOverlay || id == CSSValueWebkitMarquee)
899 validPrimitive = true;
900 break;
901
902 case CSSPropertyListStylePosition: // inside | outside | inherit
903 if (id == CSSValueInside || id == CSSValueOutside)
904 validPrimitive = true;
905 break;
906
907 case CSSPropertyListStyleType:
908 // See section CSS_PROP_LIST_STYLE_TYPE of file CSSValueKeywords.in
909 // for the list of supported list-style-types.
910 if ((id >= CSSValueDisc && id <= CSSValueKatakanaIroha) || id == CSSValueNone)
911 validPrimitive = true;
912 break;
913
914 case CSSPropertyDisplay:
915 // inline | block | list-item | run-in | inline-block | table |
916 // inline-table | table-row-group | table-header-group | table-footer-group | table-row |
917 // table-column-group | table-column | table-cell | table-caption | box | inline-box | none | inherit
918 #if ENABLE(WCSS)
919 if ((id >= CSSValueInline && id <= CSSValueWapMarquee) || id == CSSValueNone)
920 #else
921 if ((id >= CSSValueInline && id <= CSSValueWebkitInlineBox) || id == CSSValueNone)
922 #endif
923 validPrimitive = true;
924 break;
925
926 case CSSPropertyDirection: // ltr | rtl | inherit
927 if (id == CSSValueLtr || id == CSSValueRtl)
928 validPrimitive = true;
929 break;
930
931 case CSSPropertyTextTransform: // capitalize | uppercase | lowercase | none | inherit
932 if ((id >= CSSValueCapitalize && id <= CSSValueLowercase) || id == CSSValueNone)
933 validPrimitive = true;
934 break;
935
936 case CSSPropertyFloat: // left | right | none | inherit + center for buggy CSS
937 if (id == CSSValueLeft || id == CSSValueRight ||
938 id == CSSValueNone || id == CSSValueCenter)
939 validPrimitive = true;
940 break;
941
942 case CSSPropertyClear: // none | left | right | both | inherit
943 if (id == CSSValueNone || id == CSSValueLeft ||
944 id == CSSValueRight|| id == CSSValueBoth)
945 validPrimitive = true;
946 break;
947
948 case CSSPropertyTextAlign:
949 // left | right | center | justify | webkit_left | webkit_right | webkit_center | webkit_match_parent |
950 // start | end | <string> | inherit
951 if ((id >= CSSValueWebkitAuto && id <= CSSValueWebkitMatchParent) || id == CSSValueStart || id == CSSValueEnd
952 || value->unit == CSSPrimitiveValue::CSS_STRING)
953 validPrimitive = true;
954 break;
955
956 case CSSPropertyOutlineStyle: // (<border-style> except hidden) | auto | inherit
957 if (id == CSSValueAuto || id == CSSValueNone || (id >= CSSValueInset && id <= CSSValueDouble))
958 validPrimitive = true;
959 break;
960
961 case CSSPropertyBorderTopStyle: //// <border-style> | inherit
962 case CSSPropertyBorderRightStyle: // Defined as: none | hidden | dotted | dashed |
963 case CSSPropertyBorderBottomStyle: // solid | double | groove | ridge | inset | outset
964 case CSSPropertyBorderLeftStyle:
965 case CSSPropertyWebkitBorderStartStyle:
966 case CSSPropertyWebkitBorderEndStyle:
967 case CSSPropertyWebkitBorderBeforeStyle:
968 case CSSPropertyWebkitBorderAfterStyle:
969 case CSSPropertyWebkitColumnRuleStyle:
970 if (id >= CSSValueNone && id <= CSSValueDouble)
971 validPrimitive = true;
972 break;
973
974 case CSSPropertyFontWeight: // normal | bold | bolder | lighter | 100 | 200 | 300 | 400 | 500 | 600 | 700 | 800 | 900 | inherit
975 return parseFontWeight(important);
976
977 case CSSPropertyBorderSpacing: {
978 const int properties[2] = { CSSPropertyWebkitBorderHorizontalSpacing,
979 CSSPropertyWebkitBorderVerticalSpacing };
980 if (num == 1) {
981 ShorthandScope scope(this, CSSPropertyBorderSpacing);
982 if (!parseValue(properties[0], important))
983 return false;
984 CSSValue* value = m_parsedProperties[m_numParsedProperties-1]->value();
985 addProperty(properties[1], value, important);
986 return true;
987 }
988 else if (num == 2) {
989 ShorthandScope scope(this, CSSPropertyBorderSpacing);
990 if (!parseValue(properties[0], important) || !parseValue(properties[1], important))
991 return false;
992 return true;
993 }
994 return false;
995 }
996 case CSSPropertyWebkitBorderHorizontalSpacing:
997 case CSSPropertyWebkitBorderVerticalSpacing:
998 validPrimitive = validUnit(value, FLength | FNonNeg, m_strict);
999 break;
1000 case CSSPropertyOutlineColor: // <color> | invert | inherit
1001 // Outline color has "invert" as additional keyword.
1002 // Also, we want to allow the special focus color even in strict parsing mode.
1003 if (id == CSSValueInvert || id == CSSValueWebkitFocusRingColor) {
1004 validPrimitive = true;
1005 break;
1006 }
1007 /* nobreak */
1008 case CSSPropertyBackgroundColor: // <color> | inherit
1009 case CSSPropertyBorderTopColor: // <color> | inherit
1010 case CSSPropertyBorderRightColor:
1011 case CSSPropertyBorderBottomColor:
1012 case CSSPropertyBorderLeftColor:
1013 case CSSPropertyWebkitBorderStartColor:
1014 case CSSPropertyWebkitBorderEndColor:
1015 case CSSPropertyWebkitBorderBeforeColor:
1016 case CSSPropertyWebkitBorderAfterColor:
1017 case CSSPropertyColor: // <color> | inherit
1018 case CSSPropertyTextLineThroughColor: // CSS3 text decoration colors
1019 case CSSPropertyTextUnderlineColor:
1020 case CSSPropertyTextOverlineColor:
1021 case CSSPropertyWebkitColumnRuleColor:
1022 case CSSPropertyWebkitTextEmphasisColor:
1023 case CSSPropertyWebkitTextFillColor:
1024 case CSSPropertyWebkitTextStrokeColor:
1025 if (id == CSSValueWebkitText)
1026 validPrimitive = true; // Always allow this, even when strict parsing is on,
1027 // since we use this in our UA sheets.
1028 else if (id == CSSValueCurrentcolor)
1029 validPrimitive = true;
1030 else if ((id >= CSSValueAqua && id <= CSSValueWindowtext) || id == CSSValueMenu ||
1031 (id >= CSSValueWebkitFocusRingColor && id < CSSValueWebkitText && !m_strict)) {
1032 validPrimitive = true;
1033 } else {
1034 parsedValue = parseColor();
1035 if (parsedValue)
1036 m_valueList->next();
1037 }
1038 break;
1039
1040 case CSSPropertyCursor: {
1041 // [<uri>,]* [ auto | crosshair | default | pointer | progress | move | e-resize | ne-resize |
1042 // nw-resize | n-resize | se-resize | sw-resize | s-resize | w-resize | ew-resize |
1043 // ns-resize | nesw-resize | nwse-resize | col-resize | row-resize | text | wait | help |
1044 // vertical-text | cell | context-menu | alias | copy | no-drop | not-allowed | -webkit-zoom-in
1045 // -webkit-zoom-out | all-scroll | -webkit-grab | -webkit-grabbing ] ] | inherit
1046 RefPtr<CSSValueList> list;
1047 while (value && value->unit == CSSPrimitiveValue::CSS_URI) {
1048 if (!list)
1049 list = CSSValueList::createCommaSeparated();
1050 String uri = value->string;
1051 Vector<int> coords;
1052 value = m_valueList->next();
1053 while (value && value->unit == CSSPrimitiveValue::CSS_NUMBER) {
1054 coords.append(int(value->fValue));
1055 value = m_valueList->next();
1056 }
1057 IntPoint hotSpot(-1, -1);
1058 int nrcoords = coords.size();
1059 if (nrcoords > 0 && nrcoords != 2)
1060 return false;
1061 if (nrcoords == 2)
1062 hotSpot = IntPoint(coords[0], coords[1]);
1063
1064 if (!uri.isNull() && m_styleSheet) {
1065 // FIXME: The completeURL call should be done when using the CSSCursorImageValue,
1066 // not when creating it.
1067 list->append(CSSCursorImageValue::create(m_styleSheet->completeURL(uri), hotSpot));
1068 }
1069
1070 if ((m_strict && !value) || (value && !(value->unit == CSSParserValue::Operator && value->iValue == ',')))
1071 return false;
1072 value = m_valueList->next(); // comma
1073 }
1074 if (list) {
1075 if (!value) { // no value after url list (MSIE 5 compatibility)
1076 if (list->length() != 1)
1077 return false;
1078 } else if (!m_strict && value->id == CSSValueHand) // MSIE 5 compatibility :/
1079 list->append(primitiveValueCache()->createIdentifierValue(CSSValuePointer));
1080 else if (value && ((value->id >= CSSValueAuto && value->id <= CSSValueWebkitGrabbing) || value->id == CSSValueCopy || value->id == CSSValueNone))
1081 list->append(primitiveValueCache()->createIdentifierValue(value->id));
1082 m_valueList->next();
1083 parsedValue = list.release();
1084 break;
1085 }
1086 id = value->id;
1087 if (!m_strict && value->id == CSSValueHand) { // MSIE 5 compatibility :/
1088 id = CSSValuePointer;
1089 validPrimitive = true;
1090 } else if ((value->id >= CSSValueAuto && value->id <= CSSValueWebkitGrabbing) || value->id == CSSValueCopy || value->id == CSSValueNone)
1091 validPrimitive = true;
1092 break;
1093 }
1094
1095 case CSSPropertyBackgroundAttachment:
1096 case CSSPropertyBackgroundClip:
1097 case CSSPropertyWebkitBackgroundClip:
1098 case CSSPropertyWebkitBackgroundComposite:
1099 case CSSPropertyBackgroundImage:
1100 case CSSPropertyBackgroundOrigin:
1101 case CSSPropertyWebkitBackgroundOrigin:
1102 case CSSPropertyBackgroundPosition:
1103 case CSSPropertyBackgroundPositionX:
1104 case CSSPropertyBackgroundPositionY:
1105 case CSSPropertyBackgroundSize:
1106 case CSSPropertyWebkitBackgroundSize:
1107 case CSSPropertyBackgroundRepeat:
1108 case CSSPropertyBackgroundRepeatX:
1109 case CSSPropertyBackgroundRepeatY:
1110 case CSSPropertyWebkitMaskAttachment:
1111 case CSSPropertyWebkitMaskClip:
1112 case CSSPropertyWebkitMaskComposite:
1113 case CSSPropertyWebkitMaskImage:
1114 case CSSPropertyWebkitMaskOrigin:
1115 case CSSPropertyWebkitMaskPosition:
1116 case CSSPropertyWebkitMaskPositionX:
1117 case CSSPropertyWebkitMaskPositionY:
1118 case CSSPropertyWebkitMaskSize:
1119 case CSSPropertyWebkitMaskRepeat:
1120 case CSSPropertyWebkitMaskRepeatX:
1121 case CSSPropertyWebkitMaskRepeatY: {
1122 RefPtr<CSSValue> val1;
1123 RefPtr<CSSValue> val2;
1124 int propId1, propId2;
1125 bool result = false;
1126 if (parseFillProperty(propId, propId1, propId2, val1, val2)) {
1127 OwnPtr<ShorthandScope> shorthandScope;
1128 if (propId == CSSPropertyBackgroundPosition ||
1129 propId == CSSPropertyBackgroundRepeat ||
1130 propId == CSSPropertyWebkitMaskPosition ||
1131 propId == CSSPropertyWebkitMaskRepeat) {
1132 shorthandScope = adoptPtr(new ShorthandScope(this, propId));
1133 }
1134 addProperty(propId1, val1.release(), important);
1135 if (val2)
1136 addProperty(propId2, val2.release(), important);
1137 result = true;
1138 }
1139 m_implicitShorthand = false;
1140 return result;
1141 }
1142 case CSSPropertyListStyleImage: // <uri> | none | inherit
1143 if (id == CSSValueNone) {
1144 parsedValue = CSSImageValue::create();
1145 m_valueList->next();
1146 } else if (value->unit == CSSPrimitiveValue::CSS_URI) {
1147 if (m_styleSheet) {
1148 // FIXME: The completeURL call should be done when using the CSSImageValue,
1149 // not when creating it.
1150 parsedValue = CSSImageValue::create(m_styleSheet->completeURL(value->string));
1151 m_valueList->next();
1152 }
1153 } else if (isGeneratedImageValue(value)) {
1154 if (parseGeneratedImage(parsedValue))
1155 m_valueList->next();
1156 else
1157 return false;
1158 }
1159 break;
1160
1161 case CSSPropertyWebkitTextStrokeWidth:
1162 case CSSPropertyOutlineWidth: // <border-width> | inherit
1163 case CSSPropertyBorderTopWidth: //// <border-width> | inherit
1164 case CSSPropertyBorderRightWidth: // Which is defined as
1165 case CSSPropertyBorderBottomWidth: // thin | medium | thick | <length>
1166 case CSSPropertyBorderLeftWidth:
1167 case CSSPropertyWebkitBorderStartWidth:
1168 case CSSPropertyWebkitBorderEndWidth:
1169 case CSSPropertyWebkitBorderBeforeWidth:
1170 case CSSPropertyWebkitBorderAfterWidth:
1171 case CSSPropertyWebkitColumnRuleWidth:
1172 if (id == CSSValueThin || id == CSSValueMedium || id == CSSValueThick)
1173 validPrimitive = true;
1174 else
1175 validPrimitive = validUnit(value, FLength | FNonNeg, m_strict);
1176 break;
1177
1178 case CSSPropertyLetterSpacing: // normal | <length> | inherit
1179 case CSSPropertyWordSpacing: // normal | <length> | inherit
1180 if (id == CSSValueNormal)
1181 validPrimitive = true;
1182 else
1183 validPrimitive = validUnit(value, FLength, m_strict);
1184 break;
1185
1186 case CSSPropertyWordBreak: // normal | break-all | break-word (this is a custom extension)
1187 if (id == CSSValueNormal || id == CSSValueBreakAll || id == CSSValueBreakWord)
1188 validPrimitive = true;
1189 break;
1190
1191 case CSSPropertyWordWrap: // normal | break-word
1192 if (id == CSSValueNormal || id == CSSValueBreakWord)
1193 validPrimitive = true;
1194 break;
1195 case CSSPropertySpeak: // none | normal | spell-out | digits | literal-punctuation | no-punctuation | inherit
1196 if (id == CSSValueNone || id == CSSValueNormal || id == CSSValueSpellOut || id == CSSValueDigits
1197 || id == CSSValueLiteralPunctuation || id == CSSValueNoPunctuation)
1198 validPrimitive = true;
1199 break;
1200
1201 case CSSPropertyTextIndent: // <length> | <percentage> | inherit
1202 validPrimitive = (!id && validUnit(value, FLength | FPercent, m_strict));
1203 break;
1204
1205 case CSSPropertyPaddingTop: //// <padding-width> | inherit
1206 case CSSPropertyPaddingRight: // Which is defined as
1207 case CSSPropertyPaddingBottom: // <length> | <percentage>
1208 case CSSPropertyPaddingLeft: ////
1209 case CSSPropertyWebkitPaddingStart:
1210 case CSSPropertyWebkitPaddingEnd:
1211 case CSSPropertyWebkitPaddingBefore:
1212 case CSSPropertyWebkitPaddingAfter:
1213 validPrimitive = (!id && validUnit(value, FLength | FPercent | FNonNeg, m_strict));
1214 break;
1215
1216 case CSSPropertyMaxHeight: // <length> | <percentage> | none | inherit
1217 case CSSPropertyMaxWidth: // <length> | <percentage> | none | inherit
1218 case CSSPropertyWebkitMaxLogicalWidth:
1219 case CSSPropertyWebkitMaxLogicalHeight:
1220 if (id == CSSValueNone || id == CSSValueIntrinsic || id == CSSValueMinIntrinsic) {
1221 validPrimitive = true;
1222 break;
1223 }
1224 /* nobreak */
1225 case CSSPropertyMinHeight: // <length> | <percentage> | inherit
1226 case CSSPropertyMinWidth: // <length> | <percentage> | inherit
1227 case CSSPropertyWebkitMinLogicalWidth:
1228 case CSSPropertyWebkitMinLogicalHeight:
1229 if (id == CSSValueIntrinsic || id == CSSValueMinIntrinsic)
1230 validPrimitive = true;
1231 else
1232 validPrimitive = (!id && validUnit(value, FLength | FPercent | FNonNeg, m_strict));
1233 break;
1234
1235 case CSSPropertyFontSize:
1236 // <absolute-size> | <relative-size> | <length> | <percentage> | inherit
1237 if (id >= CSSValueXxSmall && id <= CSSValueLarger)
1238 validPrimitive = true;
1239 else
1240 validPrimitive = (validUnit(value, FLength | FPercent | FNonNeg, m_strict));
1241 break;
1242
1243 case CSSPropertyFontStyle: // normal | italic | oblique | inherit
1244 if (id == CSSValueNormal || id == CSSValueItalic || id == CSSValueOblique)
1245 validPrimitive = true;
1246 break;
1247
1248 case CSSPropertyFontVariant: // normal | small-caps | inherit
1249 return parseFontVariant(important);
1250
1251 case CSSPropertyVerticalAlign:
1252 // baseline | sub | super | top | text-top | middle | bottom | text-bottom |
1253 // <percentage> | <length> | inherit
1254
1255 if (id >= CSSValueBaseline && id <= CSSValueWebkitBaselineMiddle)
1256 validPrimitive = true;
1257 else
1258 validPrimitive = (!id && validUnit(value, FLength | FPercent, m_strict));
1259 break;
1260
1261 case CSSPropertyHeight: // <length> | <percentage> | auto | inherit
1262 case CSSPropertyWidth: // <length> | <percentage> | auto | inherit
1263 case CSSPropertyWebkitLogicalWidth:
1264 case CSSPropertyWebkitLogicalHeight:
1265 if (id == CSSValueAuto || id == CSSValueIntrinsic || id == CSSValueMinIntrinsic)
1266 validPrimitive = true;
1267 else
1268 // ### handle multilength case where we allow relative units
1269 validPrimitive = (!id && validUnit(value, FLength | FPercent | FNonNeg, m_strict));
1270 break;
1271
1272 case CSSPropertyBottom: // <length> | <percentage> | auto | inherit
1273 case CSSPropertyLeft: // <length> | <percentage> | auto | inherit
1274 case CSSPropertyRight: // <length> | <percentage> | auto | inherit
1275 case CSSPropertyTop: // <length> | <percentage> | auto | inherit
1276 case CSSPropertyMarginTop: //// <margin-width> | inherit
1277 case CSSPropertyMarginRight: // Which is defined as
1278 case CSSPropertyMarginBottom: // <length> | <percentage> | auto | inherit
1279 case CSSPropertyMarginLeft: ////
1280 case CSSPropertyWebkitMarginStart:
1281 case CSSPropertyWebkitMarginEnd:
1282 case CSSPropertyWebkitMarginBefore:
1283 case CSSPropertyWebkitMarginAfter:
1284 if (id == CSSValueAuto)
1285 validPrimitive = true;
1286 else
1287 validPrimitive = (!id && validUnit(value, FLength | FPercent, m_strict));
1288 break;
1289
1290 case CSSPropertyZIndex: // auto | <integer> | inherit
1291 if (id == CSSValueAuto) {
1292 validPrimitive = true;
1293 break;
1294 }
1295 /* nobreak */
1296 case CSSPropertyOrphans: // <integer> | inherit | auto (We've added support for auto for backwards compatibility)
1297 case CSSPropertyWidows: // <integer> | inherit | auto (Ditto)
1298 if (id == CSSValueAuto)
1299 validPrimitive = true;
1300 else
1301 validPrimitive = (!id && validUnit(value, FInteger, false));
1302 break;
1303
1304 case CSSPropertyLineHeight: // normal | <number> | <length> | <percentage> | inherit
1305 if (id == CSSValueNormal)
1306 validPrimitive = true;
1307 else
1308 validPrimitive = (!id && validUnit(value, FNumber | FLength | FPercent | FNonNeg, m_strict));
1309 break;
1310 case CSSPropertyCounterIncrement: // [ <identifier> <integer>? ]+ | none | inherit
1311 if (id != CSSValueNone)
1312 return parseCounter(propId, 1, important);
1313 validPrimitive = true;
1314 break;
1315 case CSSPropertyCounterReset: // [ <identifier> <integer>? ]+ | none | inherit
1316 if (id != CSSValueNone)
1317 return parseCounter(propId, 0, important);
1318 validPrimitive = true;
1319 break;
1320 case CSSPropertyFontFamily:
1321 // [[ <family-name> | <generic-family> ],]* [<family-name> | <generic-family>] | inherit
1322 {
1323 parsedValue = parseFontFamily();
1324 break;
1325 }
1326
1327 case CSSPropertyTextDecoration:
1328 case CSSPropertyWebkitTextDecorationsInEffect:
1329 // none | [ underline || overline || line-through || blink ] | inherit
1330 if (id == CSSValueNone) {
1331 validPrimitive = true;
1332 } else {
1333 RefPtr<CSSValueList> list = CSSValueList::createSpaceSeparated();
1334 bool isValid = true;
1335 while (isValid && value) {
1336 switch (value->id) {
1337 case CSSValueBlink:
1338 break;
1339 case CSSValueUnderline:
1340 case CSSValueOverline:
1341 case CSSValueLineThrough:
1342 list->append(primitiveValueCache()->createIdentifierValue(value->id));
1343 break;
1344 default:
1345 isValid = false;
1346 }
1347 value = m_valueList->next();
1348 }
1349 if (list->length() && isValid) {
1350 parsedValue = list.release();
1351 m_valueList->next();
1352 }
1353 }
1354 break;
1355
1356 case CSSPropertyZoom: // normal | reset | document | <number> | <percentage> | inherit
1357 if (id == CSSValueNormal || id == CSSValueReset || id == CSSValueDocument)
1358 validPrimitive = true;
1359 else
1360 validPrimitive = (!id && validUnit(value, FNumber | FPercent | FNonNeg, true));
1361 break;
1362
1363 case CSSPropertyTableLayout: // auto | fixed | inherit
1364 if (id == CSSValueAuto || id == CSSValueFixed)
1365 validPrimitive = true;
1366 break;
1367
1368 case CSSPropertySrc: // Only used within @font-face, so cannot use inherit | initial or be !important. This is a list of urls or local references.
1369 return parseFontFaceSrc();
1370
1371 case CSSPropertyUnicodeRange:
1372 return parseFontFaceUnicodeRange();
1373
1374 /* CSS3 properties */
1375 case CSSPropertyWebkitAppearance:
1376 if ((id >= CSSValueCheckbox && id <= CSSValueTextarea) || id == CSSValueNone)
1377 validPrimitive = true;
1378 break;
1379
1380 case CSSPropertyWebkitBorderImage:
1381 case CSSPropertyWebkitMaskBoxImage:
1382 if (id == CSSValueNone)
1383 validPrimitive = true;
1384 else {
1385 RefPtr<CSSValue> result;
1386 if (parseBorderImage(propId, important, result)) {
1387 addProperty(propId, result, important);
1388 return true;
1389 }
1390 }
1391 break;
1392 case CSSPropertyBorderTopRightRadius:
1393 case CSSPropertyBorderTopLeftRadius:
1394 case CSSPropertyBorderBottomLeftRadius:
1395 case CSSPropertyBorderBottomRightRadius: {
1396 if (num != 1 && num != 2)
1397 return false;
1398 validPrimitive = validUnit(value, FLength | FPercent, m_strict);
1399 if (!validPrimitive)
1400 return false;
1401 RefPtr<CSSPrimitiveValue> parsedValue1 = primitiveValueCache()->createValue(value->fValue, (CSSPrimitiveValue::UnitTypes)value->unit);
1402 RefPtr<CSSPrimitiveValue> parsedValue2;
1403 if (num == 2) {
1404 value = m_valueList->next();
1405 validPrimitive = validUnit(value, FLength | FPercent, m_strict);
1406 if (!validPrimitive)
1407 return false;
1408 parsedValue2 = primitiveValueCache()->createValue(value->fValue, (CSSPrimitiveValue::UnitTypes)value->unit);
1409 } else
1410 parsedValue2 = parsedValue1;
1411
1412 RefPtr<Pair> pair = Pair::create(parsedValue1.release(), parsedValue2.release());
1413 RefPtr<CSSPrimitiveValue> val = primitiveValueCache()->createValue(pair.release());
1414 addProperty(propId, val.release(), important);
1415 return true;
1416 }
1417 case CSSPropertyBorderRadius:
1418 case CSSPropertyWebkitBorderRadius:
1419 return parseBorderRadius(propId, important);
1420 case CSSPropertyOutlineOffset:
1421 validPrimitive = validUnit(value, FLength | FPercent, m_strict);
1422 break;
1423 case CSSPropertyTextShadow: // CSS2 property, dropped in CSS2.1, back in CSS3, so treat as CSS3
1424 case CSSPropertyBoxShadow:
1425 case CSSPropertyWebkitBoxShadow:
1426 if (id == CSSValueNone)
1427 validPrimitive = true;
1428 else
1429 return parseShadow(propId, important);
1430 break;
1431 case CSSPropertyWebkitBoxReflect:
1432 if (id == CSSValueNone)
1433 validPrimitive = true;
1434 else
1435 return parseReflect(propId, important);
1436 break;
1437 case CSSPropertyOpacity:
1438 validPrimitive = validUnit(value, FNumber, m_strict);
1439 break;
1440 case CSSPropertyWebkitBoxAlign:
1441 if (id == CSSValueStretch || id == CSSValueStart || id == CSSValueEnd ||
1442 id == CSSValueCenter || id == CSSValueBaseline)
1443 validPrimitive = true;
1444 break;
1445 case CSSPropertyWebkitBoxDirection:
1446 if (id == CSSValueNormal || id == CSSValueReverse)
1447 validPrimitive = true;
1448 break;
1449 case CSSPropertyWebkitBoxLines:
1450 if (id == CSSValueSingle || id == CSSValueMultiple)
1451 validPrimitive = true;
1452 break;
1453 case CSSPropertyWebkitBoxOrient:
1454 if (id == CSSValueHorizontal || id == CSSValueVertical ||
1455 id == CSSValueInlineAxis || id == CSSValueBlockAxis)
1456 validPrimitive = true;
1457 break;
1458 case CSSPropertyWebkitBoxPack:
1459 if (id == CSSValueStart || id == CSSValueEnd ||
1460 id == CSSValueCenter || id == CSSValueJustify)
1461 validPrimitive = true;
1462 break;
1463 case CSSPropertyWebkitBoxFlex:
1464 validPrimitive = validUnit(value, FNumber, m_strict);
1465 break;
1466 case CSSPropertyWebkitBoxFlexGroup:
1467 case CSSPropertyWebkitBoxOrdinalGroup:
1468 validPrimitive = validUnit(value, FInteger | FNonNeg, true);
1469 break;
1470 case CSSPropertyBoxSizing:
1471 validPrimitive = id == CSSValueBorderBox || id == CSSValueContentBox;
1472 break;
1473 case CSSPropertyWebkitColorCorrection:
1474 validPrimitive = id == CSSValueSrgb || id == CSSValueDefault;
1475 break;
1476 case CSSPropertyWebkitMarquee: {
1477 const int properties[5] = { CSSPropertyWebkitMarqueeDirection, CSSPropertyWebkitMarqueeIncrement,
1478 CSSPropertyWebkitMarqueeRepetition,
1479 CSSPropertyWebkitMarqueeStyle, CSSPropertyWebkitMarqueeSpeed };
1480 return parseShorthand(propId, properties, 5, important);
1481 }
1482 case CSSPropertyWebkitMarqueeDirection:
1483 if (id == CSSValueForwards || id == CSSValueBackwards || id == CSSValueAhead ||
1484 id == CSSValueReverse || id == CSSValueLeft || id == CSSValueRight || id == CSSValueDown ||
1485 id == CSSValueUp || id == CSSValueAuto)
1486 validPrimitive = true;
1487 break;
1488 case CSSPropertyWebkitMarqueeIncrement:
1489 if (id == CSSValueSmall || id == CSSValueLarge || id == CSSValueMedium)
1490 validPrimitive = true;
1491 else
1492 validPrimitive = validUnit(value, FLength | FPercent, m_strict);
1493 break;
1494 case CSSPropertyWebkitMarqueeStyle:
1495 if (id == CSSValueNone || id == CSSValueSlide || id == CSSValueScroll || id == CSSValueAlternate)
1496 validPrimitive = true;
1497 break;
1498 case CSSPropertyWebkitMarqueeRepetition:
1499 if (id == CSSValueInfinite)
1500 validPrimitive = true;
1501 else
1502 validPrimitive = validUnit(value, FInteger | FNonNeg, m_strict);
1503 break;
1504 case CSSPropertyWebkitMarqueeSpeed:
1505 if (id == CSSValueNormal || id == CSSValueSlow || id == CSSValueFast)
1506 validPrimitive = true;
1507 else
1508 validPrimitive = validUnit(value, FTime | FInteger | FNonNeg, m_strict);
1509 break;
1510 #if ENABLE(WCSS)
1511 case CSSPropertyWapMarqueeDir:
1512 if (id == CSSValueLtr || id == CSSValueRtl)
1513 validPrimitive = true;
1514 break;
1515 case CSSPropertyWapMarqueeStyle:
1516 if (id == CSSValueNone || id == CSSValueSlide || id == CSSValueScroll || id == CSSValueAlternate)
1517 validPrimitive = true;
1518 break;
1519 case CSSPropertyWapMarqueeLoop:
1520 if (id == CSSValueInfinite)
1521 validPrimitive = true;
1522 else
1523 validPrimitive = validUnit(value, FInteger | FNonNeg, m_strict);
1524 break;
1525 case CSSPropertyWapMarqueeSpeed:
1526 if (id == CSSValueNormal || id == CSSValueSlow || id == CSSValueFast)
1527 validPrimitive = true;
1528 else
1529 validPrimitive = validUnit(value, FTime | FInteger | FNonNeg, m_strict);
1530 break;
1531 #endif
1532 case CSSPropertyWebkitUserDrag: // auto | none | element
1533 if (id == CSSValueAuto || id == CSSValueNone || id == CSSValueElement)
1534 validPrimitive = true;
1535 break;
1536 case CSSPropertyWebkitUserModify: // read-only | read-write
1537 if (id == CSSValueReadOnly || id == CSSValueReadWrite || id == CSSValueReadWritePlaintextOnly)
1538 validPrimitive = true;
1539 break;
1540 case CSSPropertyWebkitUserSelect: // auto | none | text
1541 if (id == CSSValueAuto || id == CSSValueNone || id == CSSValueText)
1542 validPrimitive = true;
1543 break;
1544 case CSSPropertyTextOverflow: // clip | ellipsis
1545 if (id == CSSValueClip || id == CSSValueEllipsis)
1546 validPrimitive = true;
1547 break;
1548 case CSSPropertyWebkitTransform:
1549 if (id == CSSValueNone)
1550 validPrimitive = true;
1551 else {
1552 PassRefPtr<CSSValue> val = parseTransform();
1553 if (val) {
1554 addProperty(propId, val, important);
1555 return true;
1556 }
1557 return false;
1558 }
1559 break;
1560 case CSSPropertyWebkitTransformOrigin:
1561 case CSSPropertyWebkitTransformOriginX:
1562 case CSSPropertyWebkitTransformOriginY:
1563 case CSSPropertyWebkitTransformOriginZ: {
1564 RefPtr<CSSValue> val1;
1565 RefPtr<CSSValue> val2;
1566 RefPtr<CSSValue> val3;
1567 int propId1, propId2, propId3;
1568 if (parseTransformOrigin(propId, propId1, propId2, propId3, val1, val2, val3)) {
1569 addProperty(propId1, val1.release(), important);
1570 if (val2)
1571 addProperty(propId2, val2.release(), important);
1572 if (val3)
1573 addProperty(propId3, val3.release(), important);
1574 return true;
1575 }
1576 return false;
1577 }
1578 case CSSPropertyWebkitTransformStyle:
1579 if (value->id == CSSValueFlat || value->id == CSSValuePreserve3d)
1580 validPrimitive = true;
1581 break;
1582 case CSSPropertyWebkitBackfaceVisibility:
1583 if (value->id == CSSValueVisible || value->id == CSSValueHidden)
1584 validPrimitive = true;
1585 break;
1586 case CSSPropertyWebkitPerspective:
1587 if (id == CSSValueNone)
1588 validPrimitive = true;
1589 else {
1590 // Accepting valueless numbers is a quirk of the -webkit prefixed version of the property.
1591 if (validUnit(value, FNumber | FLength | FNonNeg, m_strict)) {
1592 RefPtr<CSSValue> val = primitiveValueCache()->createValue(value->fValue, (CSSPrimitiveValue::UnitTypes)value->unit);
1593 if (val) {
1594 addProperty(propId, val.release(), important);
1595 return true;
1596 }
1597 return false;
1598 }
1599 }
1600 break;
1601 case CSSPropertyWebkitPerspectiveOrigin:
1602 case CSSPropertyWebkitPerspectiveOriginX:
1603 case CSSPropertyWebkitPerspectiveOriginY: {
1604 RefPtr<CSSValue> val1;
1605 RefPtr<CSSValue> val2;
1606 int propId1, propId2;
1607 if (parsePerspectiveOrigin(propId, propId1, propId2, val1, val2)) {
1608 addProperty(propId1, val1.release(), important);
1609 if (val2)
1610 addProperty(propId2, val2.release(), important);
1611 return true;
1612 }
1613 return false;
1614 }
1615 case CSSPropertyWebkitAnimationDelay:
1616 case CSSPropertyWebkitAnimationDirection:
1617 case CSSPropertyWebkitAnimationDuration:
1618 case CSSPropertyWebkitAnimationFillMode:
1619 case CSSPropertyWebkitAnimationName:
1620 case CSSPropertyWebkitAnimationPlayState:
1621 case CSSPropertyWebkitAnimationIterationCount:
1622 case CSSPropertyWebkitAnimationTimingFunction:
1623 case CSSPropertyWebkitTransitionDelay:
1624 case CSSPropertyWebkitTransitionDuration:
1625 case CSSPropertyWebkitTransitionTimingFunction:
1626 case CSSPropertyWebkitTransitionProperty: {
1627 RefPtr<CSSValue> val;
1628 if (parseAnimationProperty(propId, val)) {
1629 addProperty(propId, val.release(), important);
1630 return true;
1631 }
1632 return false;
1633 }
1634 case CSSPropertyWebkitMarginCollapse: {
1635 const int properties[2] = { CSSPropertyWebkitMarginBeforeCollapse,
1636 CSSPropertyWebkitMarginAfterCollapse };
1637 if (num == 1) {
1638 ShorthandScope scope(this, CSSPropertyWebkitMarginCollapse);
1639 if (!parseValue(properties[0], important))
1640 return false;
1641 CSSValue* value = m_parsedProperties[m_numParsedProperties-1]->value();
1642 addProperty(properties[1], value, important);
1643 return true;
1644 }
1645 else if (num == 2) {
1646 ShorthandScope scope(this, CSSPropertyWebkitMarginCollapse);
1647 if (!parseValue(properties[0], important) || !parseValue(properties[1], important))
1648 return false;
1649 return true;
1650 }
1651 return false;
1652 }
1653 case CSSPropertyWebkitMarginBeforeCollapse:
1654 case CSSPropertyWebkitMarginAfterCollapse:
1655 case CSSPropertyWebkitMarginTopCollapse:
1656 case CSSPropertyWebkitMarginBottomCollapse:
1657 if (id == CSSValueCollapse || id == CSSValueSeparate || id == CSSValueDiscard)
1658 validPrimitive = true;
1659 break;
1660 case CSSPropertyTextLineThroughMode:
1661 case CSSPropertyTextOverlineMode:
1662 case CSSPropertyTextUnderlineMode:
1663 if (id == CSSValueContinuous || id == CSSValueSkipWhiteSpace)
1664 validPrimitive = true;
1665 break;
1666 case CSSPropertyTextLineThroughStyle:
1667 case CSSPropertyTextOverlineStyle:
1668 case CSSPropertyTextUnderlineStyle:
1669 if (id == CSSValueNone || id == CSSValueSolid || id == CSSValueDouble ||
1670 id == CSSValueDashed || id == CSSValueDotDash || id == CSSValueDotDotDash ||
1671 id == CSSValueWave)
1672 validPrimitive = true;
1673 break;
1674 case CSSPropertyTextRendering: // auto | optimizeSpeed | optimizeLegibility | geometricPrecision
1675 if (id == CSSValueAuto || id == CSSValueOptimizespeed || id == CSSValueOptimizelegibility
1676 || id == CSSValueGeometricprecision)
1677 validPrimitive = true;
1678 break;
1679 case CSSPropertyTextLineThroughWidth:
1680 case CSSPropertyTextOverlineWidth:
1681 case CSSPropertyTextUnderlineWidth:
1682 if (id == CSSValueAuto || id == CSSValueNormal || id == CSSValueThin ||
1683 id == CSSValueMedium || id == CSSValueThick)
1684 validPrimitive = true;
1685 else
1686 validPrimitive = !id && validUnit(value, FNumber | FLength | FPercent, m_strict);
1687 break;
1688 case CSSPropertyResize: // none | both | horizontal | vertical | auto
1689 if (id == CSSValueNone || id == CSSValueBoth || id == CSSValueHorizontal || id == CSSValueVertical || id == CSSValueAuto)
1690 validPrimitive = true;
1691 break;
1692 case CSSPropertyWebkitColumnCount:
1693 if (id == CSSValueAuto)
1694 validPrimitive = true;
1695 else
1696 validPrimitive = !id && validUnit(value, FInteger | FNonNeg, false);
1697 break;
1698 case CSSPropertyWebkitColumnGap: // normal | <length>
1699 if (id == CSSValueNormal)
1700 validPrimitive = true;
1701 else
1702 validPrimitive = validUnit(value, FLength | FNonNeg, m_strict);
1703 break;
1704 case CSSPropertyWebkitColumnSpan: // all | 1
1705 if (id == CSSValueAll)
1706 validPrimitive = true;
1707 else
1708 validPrimitive = validUnit(value, FNumber | FNonNeg, m_strict) && value->fValue == 1;
1709 break;
1710 case CSSPropertyWebkitColumnWidth: // auto | <length>
1711 if (id == CSSValueAuto)
1712 validPrimitive = true;
1713 else // Always parse this property in strict mode, since it would be ambiguous otherwise when used in the 'columns' shorthand property.
1714 validPrimitive = validUnit(value, FLength, true);
1715 break;
1716 case CSSPropertyPointerEvents:
1717 // none | visiblePainted | visibleFill | visibleStroke | visible |
1718 // painted | fill | stroke | auto | all | inherit
1719 if (id == CSSValueVisible || id == CSSValueNone || id == CSSValueAll || id == CSSValueAuto ||
1720 (id >= CSSValueVisiblepainted && id <= CSSValueStroke))
1721 validPrimitive = true;
1722 break;
1723
1724 // End of CSS3 properties
1725
1726 // Apple specific properties. These will never be standardized and are purely to
1727 // support custom WebKit-based Apple applications.
1728 case CSSPropertyWebkitLineClamp:
1729 // When specifying number of lines, don't allow 0 as a valid value
1730 // When specifying either type of unit, require non-negative integers
1731 validPrimitive = (!id && (value->unit == CSSPrimitiveValue::CSS_PERCENTAGE || value->fValue) && validUnit(value, FInteger | FPercent | FNonNeg, false));
1732 break;
1733 case CSSPropertyWebkitTextSizeAdjust:
1734 if (id == CSSValueAuto || id == CSSValueNone)
1735 validPrimitive = true;
1736 break;
1737 case CSSPropertyWebkitRtlOrdering:
1738 if (id == CSSValueLogical || id == CSSValueVisual)
1739 validPrimitive = true;
1740 break;
1741
1742 case CSSPropertyWebkitFontSizeDelta: // <length>
1743 validPrimitive = validUnit(value, FLength, m_strict);
1744 break;
1745
1746 case CSSPropertyWebkitNbspMode: // normal | space
1747 if (id == CSSValueNormal || id == CSSValueSpace)
1748 validPrimitive = true;
1749 break;
1750
1751 case CSSPropertyWebkitLineBreak: // normal | after-white-space
1752 if (id == CSSValueNormal || id == CSSValueAfterWhiteSpace)
1753 validPrimitive = true;
1754 break;
1755
1756 case CSSPropertyWebkitMatchNearestMailBlockquoteColor: // normal | match
1757 if (id == CSSValueNormal || id == CSSValueMatch)
1758 validPrimitive = true;
1759 break;
1760
1761 case CSSPropertyWebkitHighlight:
1762 if (id == CSSValueNone || value->unit == CSSPrimitiveValue::CSS_STRING)
1763 validPrimitive = true;
1764 break;
1765
1766 case CSSPropertyWebkitHyphens:
1767 if (id == CSSValueNone || id == CSSValueManual || id == CSSValueAuto)
1768 validPrimitive = true;
1769 break;
1770
1771 case CSSPropertyWebkitHyphenateCharacter:
1772 if (id == CSSValueAuto || value->unit == CSSPrimitiveValue::CSS_STRING)
1773 validPrimitive = true;
1774 break;
1775
1776 case CSSPropertyWebkitHyphenateLimitBefore:
1777 case CSSPropertyWebkitHyphenateLimitAfter:
1778 if (id == CSSValueAuto || validUnit(value, FInteger | FNonNeg, true))
1779 validPrimitive = true;
1780 break;
1781
1782 case CSSPropertyWebkitLocale:
1783 if (id == CSSValueAuto || value->unit == CSSPrimitiveValue::CSS_STRING)
1784 validPrimitive = true;
1785 break;
1786
1787 case CSSPropertyWebkitBorderFit:
1788 if (id == CSSValueBorder || id == CSSValueLines)
1789 validPrimitive = true;
1790 break;
1791
1792 case CSSPropertyWebkitTextSecurity:
1793 // disc | circle | square | none | inherit
1794 if (id == CSSValueDisc || id == CSSValueCircle || id == CSSValueSquare|| id == CSSValueNone)
1795 validPrimitive = true;
1796 break;
1797
1798 case CSSPropertyWebkitFontSmoothing:
1799 if (id == CSSValueAuto || id == CSSValueNone
1800 || id == CSSValueAntialiased || id == CSSValueSubpixelAntialiased)
1801 validPrimitive = true;
1802 break;
1803
1804 #if ENABLE(DASHBOARD_SUPPORT)
1805 case CSSPropertyWebkitDashboardRegion: // <dashboard-region> | <dashboard-region>
1806 if (value->unit == CSSParserValue::Function || id == CSSValueNone)
1807 return parseDashboardRegions(propId, important);
1808 break;
1809 #endif
1810 // End Apple-specific properties
1811
1812 /* shorthand properties */
1813 case CSSPropertyBackground: {
1814 // Position must come before color in this array because a plain old "0" is a legal color
1815 // in quirks mode but it's usually the X coordinate of a position.
1816 // FIXME: Add CSSPropertyBackgroundSize to the shorthand.
1817 const int properties[] = { CSSPropertyBackgroundImage, CSSPropertyBackgroundRepeat,
1818 CSSPropertyBackgroundAttachment, CSSPropertyBackgroundPosition, CSSPropertyBackgroundOrigin,
1819 CSSPropertyBackgroundClip, CSSPropertyBackgroundColor };
1820 return parseFillShorthand(propId, properties, 7, important);
1821 }
1822 case CSSPropertyWebkitMask: {
1823 const int properties[] = { CSSPropertyWebkitMaskImage, CSSPropertyWebkitMaskRepeat,
1824 CSSPropertyWebkitMaskAttachment, CSSPropertyWebkitMaskPosition,
1825 CSSPropertyWebkitMaskOrigin, CSSPropertyWebkitMaskClip };
1826 return parseFillShorthand(propId, properties, 6, important);
1827 }
1828 case CSSPropertyBorder:
1829 // [ 'border-width' || 'border-style' || <color> ] | inherit
1830 {
1831 const int properties[3] = { CSSPropertyBorderWidth, CSSPropertyBorderStyle,
1832 CSSPropertyBorderColor };
1833 return parseShorthand(propId, properties, 3, important);
1834 }
1835 case CSSPropertyBorderTop:
1836 // [ 'border-top-width' || 'border-style' || <color> ] | inherit
1837 {
1838 const int properties[3] = { CSSPropertyBorderTopWidth, CSSPropertyBorderTopStyle,
1839 CSSPropertyBorderTopColor};
1840 return parseShorthand(propId, properties, 3, important);
1841 }
1842 case CSSPropertyBorderRight:
1843 // [ 'border-right-width' || 'border-style' || <color> ] | inherit
1844 {
1845 const int properties[3] = { CSSPropertyBorderRightWidth, CSSPropertyBorderRightStyle,
1846 CSSPropertyBorderRightColor };
1847 return parseShorthand(propId, properties, 3, important);
1848 }
1849 case CSSPropertyBorderBottom:
1850 // [ 'border-bottom-width' || 'border-style' || <color> ] | inherit
1851 {
1852 const int properties[3] = { CSSPropertyBorderBottomWidth, CSSPropertyBorderBottomStyle,
1853 CSSPropertyBorderBottomColor };
1854 return parseShorthand(propId, properties, 3, important);
1855 }
1856 case CSSPropertyBorderLeft:
1857 // [ 'border-left-width' || 'border-style' || <color> ] | inherit
1858 {
1859 const int properties[3] = { CSSPropertyBorderLeftWidth, CSSPropertyBorderLeftStyle,
1860 CSSPropertyBorderLeftColor };
1861 return parseShorthand(propId, properties, 3, important);
1862 }
1863 case CSSPropertyWebkitBorderStart:
1864 {
1865 const int properties[3] = { CSSPropertyWebkitBorderStartWidth, CSSPropertyWebkitBorderStartStyle,
1866 CSSPropertyWebkitBorderStartColor };
1867 return parseShorthand(propId, properties, 3, important);
1868 }
1869 case CSSPropertyWebkitBorderEnd:
1870 {
1871 const int properties[3] = { CSSPropertyWebkitBorderEndWidth, CSSPropertyWebkitBorderEndStyle,
1872 CSSPropertyWebkitBorderEndColor };
1873 return parseShorthand(propId, properties, 3, important);
1874 }
1875 case CSSPropertyWebkitBorderBefore:
1876 {
1877 const int properties[3] = { CSSPropertyWebkitBorderBeforeWidth, CSSPropertyWebkitBorderBeforeStyle,
1878 CSSPropertyWebkitBorderBeforeColor };
1879 return parseShorthand(propId, properties, 3, important);
1880 }
1881 case CSSPropertyWebkitBorderAfter:
1882 {
1883 const int properties[3] = { CSSPropertyWebkitBorderAfterWidth, CSSPropertyWebkitBorderAfterStyle,
1884 CSSPropertyWebkitBorderAfterColor };
1885 return parseShorthand(propId, properties, 3, important);
1886 }
1887 case CSSPropertyOutline:
1888 // [ 'outline-color' || 'outline-style' || 'outline-width' ] | inherit
1889 {
1890 const int properties[3] = { CSSPropertyOutlineWidth, CSSPropertyOutlineStyle,
1891 CSSPropertyOutlineColor };
1892 return parseShorthand(propId, properties, 3, important);
1893 }
1894 case CSSPropertyBorderColor:
1895 // <color>{1,4} | inherit
1896 {
1897 const int properties[4] = { CSSPropertyBorderTopColor, CSSPropertyBorderRightColor,
1898 CSSPropertyBorderBottomColor, CSSPropertyBorderLeftColor };
1899 return parse4Values(propId, properties, important);
1900 }
1901 case CSSPropertyBorderWidth:
1902 // <border-width>{1,4} | inherit
1903 {
1904 const int properties[4] = { CSSPropertyBorderTopWidth, CSSPropertyBorderRightWidth,
1905 CSSPropertyBorderBottomWidth, CSSPropertyBorderLeftWidth };
1906 return parse4Values(propId, properties, important);
1907 }
1908 case CSSPropertyBorderStyle:
1909 // <border-style>{1,4} | inherit
1910 {
1911 const int properties[4] = { CSSPropertyBorderTopStyle, CSSPropertyBorderRightStyle,
1912 CSSPropertyBorderBottomStyle, CSSPropertyBorderLeftStyle };
1913 return parse4Values(propId, properties, important);
1914 }
1915 case CSSPropertyMargin:
1916 // <margin-width>{1,4} | inherit
1917 {
1918 const int properties[4] = { CSSPropertyMarginTop, CSSPropertyMarginRight,
1919 CSSPropertyMarginBottom, CSSPropertyMarginLeft };
1920 return parse4Values(propId, properties, important);
1921 }
1922 case CSSPropertyPadding:
1923 // <padding-width>{1,4} | inherit
1924 {
1925 const int properties[4] = { CSSPropertyPaddingTop, CSSPropertyPaddingRight,
1926 CSSPropertyPaddingBottom, CSSPropertyPaddingLeft };
1927 return parse4Values(propId, properties, important);
1928 }
1929 case CSSPropertyFont:
1930 // [ [ 'font-style' || 'font-variant' || 'font-weight' ]? 'font-size' [ / 'line-height' ]?
1931 // 'font-family' ] | caption | icon | menu | message-box | small-caption | status-bar | inherit
1932 if (id >= CSSValueCaption && id <= CSSValueStatusBar)
1933 validPrimitive = true;
1934 else
1935 return parseFont(important);
1936 break;
1937 case CSSPropertyListStyle:
1938 {
1939 const int properties[3] = { CSSPropertyListStyleType, CSSPropertyListStylePosition,
1940 CSSPropertyListStyleImage };
1941 return parseShorthand(propId, properties, 3, important);
1942 }
1943 case CSSPropertyWebkitColumns: {
1944 const int properties[2] = { CSSPropertyWebkitColumnWidth, CSSPropertyWebkitColumnCount };
1945 return parseShorthand(propId, properties, 2, important);
1946 }
1947 case CSSPropertyWebkitColumnRule: {
1948 const int properties[3] = { CSSPropertyWebkitColumnRuleWidth, CSSPropertyWebkitColumnRuleStyle,
1949 CSSPropertyWebkitColumnRuleColor };
1950 return parseShorthand(propId, properties, 3, important);
1951 }
1952 case CSSPropertyWebkitTextStroke: {
1953 const int properties[2] = { CSSPropertyWebkitTextStrokeWidth, CSSPropertyWebkitTextStrokeColor };
1954 return parseShorthand(propId, properties, 2, important);
1955 }
1956 case CSSPropertyWebkitAnimation:
1957 return parseAnimationShorthand(important);
1958 case CSSPropertyWebkitTransition:
1959 return parseTransitionShorthand(important);
1960 case CSSPropertyInvalid:
1961 return false;
1962 case CSSPropertyPage:
1963 return parsePage(propId, important);
1964 case CSSPropertyFontStretch:
1965 case CSSPropertyTextLineThrough:
1966 case CSSPropertyTextOverline:
1967 case CSSPropertyTextUnderline:
1968 return false;
1969 #if ENABLE(WCSS)
1970 case CSSPropertyWapInputFormat:
1971 validPrimitive = true;
1972 break;
1973 case CSSPropertyWapInputRequired:
1974 parsedValue = parseWCSSInputProperty();
1975 break;
1976 #endif
1977
1978 // CSS Text Layout Module Level 3: Vertical writing support
1979 case CSSPropertyWebkitWritingMode:
1980 if (id >= CSSValueHorizontalTb && id <= CSSValueHorizontalBt)
1981 validPrimitive = true;
1982 break;
1983
1984 case CSSPropertyWebkitTextCombine:
1985 if (id == CSSValueNone || id == CSSValueHorizontal)
1986 validPrimitive = true;
1987 break;
1988
1989 case CSSPropertyWebkitTextEmphasis: {
1990 const int properties[] = { CSSPropertyWebkitTextEmphasisStyle, CSSPropertyWebkitTextEmphasisColor };
1991 return parseShorthand(propId, properties, WTF_ARRAY_LENGTH(properties), important);
1992 }
1993
1994 case CSSPropertyWebkitTextEmphasisPosition:
1995 if (id == CSSValueOver || id == CSSValueUnder)
1996 validPrimitive = true;
1997 break;
1998
1999 case CSSPropertyWebkitTextEmphasisStyle:
2000 return parseTextEmphasisStyle(important);
2001
2002 case CSSPropertyWebkitTextOrientation:
2003 // FIXME: For now just support upright and vertical-right.
2004 if (id == CSSValueVerticalRight || id == CSSValueUpright)
2005 validPrimitive = true;
2006 break;
2007
2008 case CSSPropertyWebkitLineBoxContain:
2009 if (id == CSSValueNone)
2010 validPrimitive = true;
2011 else
2012 return parseLineBoxContain(important);
2013 break;
2014
2015 #if ENABLE(SVG)
2016 default:
2017 return parseSVGValue(propId, important);
2018 #endif
2019 }
2020
2021 if (validPrimitive) {
2022 if (id != 0)
2023 parsedValue = primitiveValueCache()->createIdentifierValue(id);
2024 else if (value->unit == CSSPrimitiveValue::CSS_STRING)
2025 parsedValue = primitiveValueCache()->createValue(value->string, (CSSPrimitiveValue::UnitTypes) value->unit);
2026 else if (value->unit >= CSSPrimitiveValue::CSS_NUMBER && value->unit <= CSSPrimitiveValue::CSS_KHZ)
2027 parsedValue = primitiveValueCache()->createValue(value->fValue, (CSSPrimitiveValue::UnitTypes) value->unit);
2028 else if (value->unit >= CSSPrimitiveValue::CSS_TURN && value->unit <= CSSPrimitiveValue::CSS_REMS)
2029 parsedValue = primitiveValueCache()->createValue(value->fValue, (CSSPrimitiveValue::UnitTypes) value->unit);
2030 else if (value->unit >= CSSParserValue::Q_EMS)
2031 parsedValue = CSSQuirkPrimitiveValue::create(value->fValue, CSSPrimitiveValue::CSS_EMS);
2032 m_valueList->next();
2033 }
2034 if (parsedValue) {
2035 if (!m_valueList->current() || inShorthand()) {
2036 addProperty(propId, parsedValue.release(), important);
2037 return true;
2038 }
2039 }
2040 return false;
2041 }
2042
2043 #if ENABLE(WCSS)
parseWCSSInputProperty()2044 PassRefPtr<CSSValue> CSSParser::parseWCSSInputProperty()
2045 {
2046 RefPtr<CSSValue> parsedValue = 0;
2047 CSSParserValue* value = m_valueList->current();
2048 String inputProperty;
2049 if (value->unit == CSSPrimitiveValue::CSS_STRING || value->unit == CSSPrimitiveValue::CSS_IDENT)
2050 inputProperty = String(value->string);
2051
2052 if (!inputProperty.isEmpty())
2053 parsedValue = primitiveValueCache()->createValue(inputProperty, CSSPrimitiveValue::CSS_STRING);
2054
2055 while (m_valueList->next()) {
2056 // pass all other values, if any. If we don't do this,
2057 // the parser will think that it's not done and won't process this property
2058 }
2059
2060 return parsedValue;
2061 }
2062 #endif
2063
addFillValue(RefPtr<CSSValue> & lval,PassRefPtr<CSSValue> rval)2064 void CSSParser::addFillValue(RefPtr<CSSValue>& lval, PassRefPtr<CSSValue> rval)
2065 {
2066 if (lval) {
2067 if (lval->isValueList())
2068 static_cast<CSSValueList*>(lval.get())->append(rval);
2069 else {
2070 PassRefPtr<CSSValue> oldlVal(lval.release());
2071 PassRefPtr<CSSValueList> list = CSSValueList::createCommaSeparated();
2072 list->append(oldlVal);
2073 list->append(rval);
2074 lval = list;
2075 }
2076 }
2077 else
2078 lval = rval;
2079 }
2080
parseBackgroundClip(CSSParserValue * parserValue,RefPtr<CSSValue> & cssValue,CSSPrimitiveValueCache * primitiveValueCache)2081 static bool parseBackgroundClip(CSSParserValue* parserValue, RefPtr<CSSValue>& cssValue, CSSPrimitiveValueCache* primitiveValueCache)
2082 {
2083 if (parserValue->id == CSSValueBorderBox || parserValue->id == CSSValuePaddingBox
2084 || parserValue->id == CSSValueContentBox || parserValue->id == CSSValueWebkitText) {
2085 cssValue = primitiveValueCache->createIdentifierValue(parserValue->id);
2086 return true;
2087 }
2088 return false;
2089 }
2090
2091 const int cMaxFillProperties = 9;
2092
parseFillShorthand(int propId,const int * properties,int numProperties,bool important)2093 bool CSSParser::parseFillShorthand(int propId, const int* properties, int numProperties, bool important)
2094 {
2095 ASSERT(numProperties <= cMaxFillProperties);
2096 if (numProperties > cMaxFillProperties)
2097 return false;
2098
2099 ShorthandScope scope(this, propId);
2100
2101 bool parsedProperty[cMaxFillProperties] = { false };
2102 RefPtr<CSSValue> values[cMaxFillProperties];
2103 RefPtr<CSSValue> clipValue;
2104 RefPtr<CSSValue> positionYValue;
2105 RefPtr<CSSValue> repeatYValue;
2106 bool foundClip = false;
2107 int i;
2108
2109 while (m_valueList->current()) {
2110 CSSParserValue* val = m_valueList->current();
2111 if (val->unit == CSSParserValue::Operator && val->iValue == ',') {
2112 // We hit the end. Fill in all remaining values with the initial value.
2113 m_valueList->next();
2114 for (i = 0; i < numProperties; ++i) {
2115 if (properties[i] == CSSPropertyBackgroundColor && parsedProperty[i])
2116 // Color is not allowed except as the last item in a list for backgrounds.
2117 // Reject the entire property.
2118 return false;
2119
2120 if (!parsedProperty[i] && properties[i] != CSSPropertyBackgroundColor) {
2121 addFillValue(values[i], CSSInitialValue::createImplicit());
2122 if (properties[i] == CSSPropertyBackgroundPosition || properties[i] == CSSPropertyWebkitMaskPosition)
2123 addFillValue(positionYValue, CSSInitialValue::createImplicit());
2124 if (properties[i] == CSSPropertyBackgroundRepeat || properties[i] == CSSPropertyWebkitMaskRepeat)
2125 addFillValue(repeatYValue, CSSInitialValue::createImplicit());
2126 if ((properties[i] == CSSPropertyBackgroundOrigin || properties[i] == CSSPropertyWebkitMaskOrigin) && !parsedProperty[i]) {
2127 // If background-origin wasn't present, then reset background-clip also.
2128 addFillValue(clipValue, CSSInitialValue::createImplicit());
2129 }
2130 }
2131 parsedProperty[i] = false;
2132 }
2133 if (!m_valueList->current())
2134 break;
2135 }
2136
2137 bool found = false;
2138 for (i = 0; !found && i < numProperties; ++i) {
2139 if (!parsedProperty[i]) {
2140 RefPtr<CSSValue> val1;
2141 RefPtr<CSSValue> val2;
2142 int propId1, propId2;
2143 CSSParserValue* parserValue = m_valueList->current();
2144 if (parseFillProperty(properties[i], propId1, propId2, val1, val2)) {
2145 parsedProperty[i] = found = true;
2146 addFillValue(values[i], val1.release());
2147 if (properties[i] == CSSPropertyBackgroundPosition || properties[i] == CSSPropertyWebkitMaskPosition)
2148 addFillValue(positionYValue, val2.release());
2149 if (properties[i] == CSSPropertyBackgroundRepeat || properties[i] == CSSPropertyWebkitMaskRepeat)
2150 addFillValue(repeatYValue, val2.release());
2151 if (properties[i] == CSSPropertyBackgroundOrigin || properties[i] == CSSPropertyWebkitMaskOrigin) {
2152 // Reparse the value as a clip, and see if we succeed.
2153 if (parseBackgroundClip(parserValue, val1, primitiveValueCache()))
2154 addFillValue(clipValue, val1.release()); // The property parsed successfully.
2155 else
2156 addFillValue(clipValue, CSSInitialValue::createImplicit()); // Some value was used for origin that is not supported by clip. Just reset clip instead.
2157 }
2158 if (properties[i] == CSSPropertyBackgroundClip || properties[i] == CSSPropertyWebkitMaskClip) {
2159 // Update clipValue
2160 addFillValue(clipValue, val1.release());
2161 foundClip = true;
2162 }
2163 }
2164 }
2165 }
2166
2167 // if we didn't find at least one match, this is an
2168 // invalid shorthand and we have to ignore it
2169 if (!found)
2170 return false;
2171 }
2172
2173 // Fill in any remaining properties with the initial value.
2174 for (i = 0; i < numProperties; ++i) {
2175 if (!parsedProperty[i]) {
2176 addFillValue(values[i], CSSInitialValue::createImplicit());
2177 if (properties[i] == CSSPropertyBackgroundPosition || properties[i] == CSSPropertyWebkitMaskPosition)
2178 addFillValue(positionYValue, CSSInitialValue::createImplicit());
2179 if (properties[i] == CSSPropertyBackgroundRepeat || properties[i] == CSSPropertyWebkitMaskRepeat)
2180 addFillValue(repeatYValue, CSSInitialValue::createImplicit());
2181 if ((properties[i] == CSSPropertyBackgroundOrigin || properties[i] == CSSPropertyWebkitMaskOrigin) && !parsedProperty[i]) {
2182 // If background-origin wasn't present, then reset background-clip also.
2183 addFillValue(clipValue, CSSInitialValue::createImplicit());
2184 }
2185 }
2186 }
2187
2188 // Now add all of the properties we found.
2189 for (i = 0; i < numProperties; i++) {
2190 if (properties[i] == CSSPropertyBackgroundPosition) {
2191 addProperty(CSSPropertyBackgroundPositionX, values[i].release(), important);
2192 // it's OK to call positionYValue.release() since we only see CSSPropertyBackgroundPosition once
2193 addProperty(CSSPropertyBackgroundPositionY, positionYValue.release(), important);
2194 } else if (properties[i] == CSSPropertyWebkitMaskPosition) {
2195 addProperty(CSSPropertyWebkitMaskPositionX, values[i].release(), important);
2196 // it's OK to call positionYValue.release() since we only see CSSPropertyWebkitMaskPosition once
2197 addProperty(CSSPropertyWebkitMaskPositionY, positionYValue.release(), important);
2198 } else if (properties[i] == CSSPropertyBackgroundRepeat) {
2199 addProperty(CSSPropertyBackgroundRepeatX, values[i].release(), important);
2200 // it's OK to call repeatYValue.release() since we only see CSSPropertyBackgroundPosition once
2201 addProperty(CSSPropertyBackgroundRepeatY, repeatYValue.release(), important);
2202 } else if (properties[i] == CSSPropertyWebkitMaskRepeat) {
2203 addProperty(CSSPropertyWebkitMaskRepeatX, values[i].release(), important);
2204 // it's OK to call repeatYValue.release() since we only see CSSPropertyBackgroundPosition once
2205 addProperty(CSSPropertyWebkitMaskRepeatY, repeatYValue.release(), important);
2206 } else if ((properties[i] == CSSPropertyBackgroundClip || properties[i] == CSSPropertyWebkitMaskClip) && !foundClip)
2207 // Value is already set while updating origin
2208 continue;
2209 else
2210 addProperty(properties[i], values[i].release(), important);
2211
2212 // Add in clip values when we hit the corresponding origin property.
2213 if (properties[i] == CSSPropertyBackgroundOrigin && !foundClip)
2214 addProperty(CSSPropertyBackgroundClip, clipValue.release(), important);
2215 else if (properties[i] == CSSPropertyWebkitMaskOrigin && !foundClip)
2216 addProperty(CSSPropertyWebkitMaskClip, clipValue.release(), important);
2217 }
2218
2219 return true;
2220 }
2221
addAnimationValue(RefPtr<CSSValue> & lval,PassRefPtr<CSSValue> rval)2222 void CSSParser::addAnimationValue(RefPtr<CSSValue>& lval, PassRefPtr<CSSValue> rval)
2223 {
2224 if (lval) {
2225 if (lval->isValueList())
2226 static_cast<CSSValueList*>(lval.get())->append(rval);
2227 else {
2228 PassRefPtr<CSSValue> oldVal(lval.release());
2229 PassRefPtr<CSSValueList> list = CSSValueList::createCommaSeparated();
2230 list->append(oldVal);
2231 list->append(rval);
2232 lval = list;
2233 }
2234 }
2235 else
2236 lval = rval;
2237 }
2238
parseAnimationShorthand(bool important)2239 bool CSSParser::parseAnimationShorthand(bool important)
2240 {
2241 const int properties[] = { CSSPropertyWebkitAnimationName,
2242 CSSPropertyWebkitAnimationDuration,
2243 CSSPropertyWebkitAnimationTimingFunction,
2244 CSSPropertyWebkitAnimationDelay,
2245 CSSPropertyWebkitAnimationIterationCount,
2246 CSSPropertyWebkitAnimationDirection,
2247 CSSPropertyWebkitAnimationFillMode };
2248 const int numProperties = WTF_ARRAY_LENGTH(properties);
2249
2250 ShorthandScope scope(this, CSSPropertyWebkitAnimation);
2251
2252 bool parsedProperty[numProperties] = { false }; // compiler will repeat false as necessary
2253 RefPtr<CSSValue> values[numProperties];
2254
2255 int i;
2256 while (m_valueList->current()) {
2257 CSSParserValue* val = m_valueList->current();
2258 if (val->unit == CSSParserValue::Operator && val->iValue == ',') {
2259 // We hit the end. Fill in all remaining values with the initial value.
2260 m_valueList->next();
2261 for (i = 0; i < numProperties; ++i) {
2262 if (!parsedProperty[i])
2263 addAnimationValue(values[i], CSSInitialValue::createImplicit());
2264 parsedProperty[i] = false;
2265 }
2266 if (!m_valueList->current())
2267 break;
2268 }
2269
2270 bool found = false;
2271 for (i = 0; !found && i < numProperties; ++i) {
2272 if (!parsedProperty[i]) {
2273 RefPtr<CSSValue> val;
2274 if (parseAnimationProperty(properties[i], val)) {
2275 parsedProperty[i] = found = true;
2276 addAnimationValue(values[i], val.release());
2277 }
2278 }
2279 }
2280
2281 // if we didn't find at least one match, this is an
2282 // invalid shorthand and we have to ignore it
2283 if (!found)
2284 return false;
2285 }
2286
2287 // Fill in any remaining properties with the initial value.
2288 for (i = 0; i < numProperties; ++i) {
2289 if (!parsedProperty[i])
2290 addAnimationValue(values[i], CSSInitialValue::createImplicit());
2291 }
2292
2293 // Now add all of the properties we found.
2294 for (i = 0; i < numProperties; i++)
2295 addProperty(properties[i], values[i].release(), important);
2296
2297 return true;
2298 }
2299
parseTransitionShorthand(bool important)2300 bool CSSParser::parseTransitionShorthand(bool important)
2301 {
2302 const int properties[] = { CSSPropertyWebkitTransitionProperty,
2303 CSSPropertyWebkitTransitionDuration,
2304 CSSPropertyWebkitTransitionTimingFunction,
2305 CSSPropertyWebkitTransitionDelay };
2306 const int numProperties = WTF_ARRAY_LENGTH(properties);
2307
2308 ShorthandScope scope(this, CSSPropertyWebkitTransition);
2309
2310 bool parsedProperty[numProperties] = { false }; // compiler will repeat false as necessary
2311 RefPtr<CSSValue> values[numProperties];
2312
2313 int i;
2314 while (m_valueList->current()) {
2315 CSSParserValue* val = m_valueList->current();
2316 if (val->unit == CSSParserValue::Operator && val->iValue == ',') {
2317 // We hit the end. Fill in all remaining values with the initial value.
2318 m_valueList->next();
2319 for (i = 0; i < numProperties; ++i) {
2320 if (!parsedProperty[i])
2321 addAnimationValue(values[i], CSSInitialValue::createImplicit());
2322 parsedProperty[i] = false;
2323 }
2324 if (!m_valueList->current())
2325 break;
2326 }
2327
2328 bool found = false;
2329 for (i = 0; !found && i < numProperties; ++i) {
2330 if (!parsedProperty[i]) {
2331 RefPtr<CSSValue> val;
2332 if (parseAnimationProperty(properties[i], val)) {
2333 parsedProperty[i] = found = true;
2334 addAnimationValue(values[i], val.release());
2335 }
2336 }
2337 }
2338
2339 // if we didn't find at least one match, this is an
2340 // invalid shorthand and we have to ignore it
2341 if (!found)
2342 return false;
2343 }
2344
2345 // Fill in any remaining properties with the initial value.
2346 for (i = 0; i < numProperties; ++i) {
2347 if (!parsedProperty[i])
2348 addAnimationValue(values[i], CSSInitialValue::createImplicit());
2349 }
2350
2351 // Now add all of the properties we found.
2352 for (i = 0; i < numProperties; i++)
2353 addProperty(properties[i], values[i].release(), important);
2354
2355 return true;
2356 }
2357
parseShorthand(int propId,const int * properties,int numProperties,bool important)2358 bool CSSParser::parseShorthand(int propId, const int *properties, int numProperties, bool important)
2359 {
2360 // We try to match as many properties as possible
2361 // We set up an array of booleans to mark which property has been found,
2362 // and we try to search for properties until it makes no longer any sense.
2363 ShorthandScope scope(this, propId);
2364
2365 bool found = false;
2366 bool fnd[6]; // Trust me ;)
2367 for (int i = 0; i < numProperties; i++)
2368 fnd[i] = false;
2369
2370 while (m_valueList->current()) {
2371 found = false;
2372 for (int propIndex = 0; !found && propIndex < numProperties; ++propIndex) {
2373 if (!fnd[propIndex]) {
2374 if (parseValue(properties[propIndex], important))
2375 fnd[propIndex] = found = true;
2376 }
2377 }
2378
2379 // if we didn't find at least one match, this is an
2380 // invalid shorthand and we have to ignore it
2381 if (!found)
2382 return false;
2383 }
2384
2385 // Fill in any remaining properties with the initial value.
2386 m_implicitShorthand = true;
2387 for (int i = 0; i < numProperties; ++i) {
2388 if (!fnd[i])
2389 addProperty(properties[i], CSSInitialValue::createImplicit(), important);
2390 }
2391 m_implicitShorthand = false;
2392
2393 return true;
2394 }
2395
parse4Values(int propId,const int * properties,bool important)2396 bool CSSParser::parse4Values(int propId, const int *properties, bool important)
2397 {
2398 /* From the CSS 2 specs, 8.3
2399 * If there is only one value, it applies to all sides. If there are two values, the top and
2400 * bottom margins are set to the first value and the right and left margins are set to the second.
2401 * If there are three values, the top is set to the first value, the left and right are set to the
2402 * second, and the bottom is set to the third. If there are four values, they apply to the top,
2403 * right, bottom, and left, respectively.
2404 */
2405
2406 int num = inShorthand() ? 1 : m_valueList->size();
2407
2408 ShorthandScope scope(this, propId);
2409
2410 // the order is top, right, bottom, left
2411 switch (num) {
2412 case 1: {
2413 if (!parseValue(properties[0], important))
2414 return false;
2415 CSSValue *value = m_parsedProperties[m_numParsedProperties-1]->value();
2416 m_implicitShorthand = true;
2417 addProperty(properties[1], value, important);
2418 addProperty(properties[2], value, important);
2419 addProperty(properties[3], value, important);
2420 m_implicitShorthand = false;
2421 break;
2422 }
2423 case 2: {
2424 if (!parseValue(properties[0], important) || !parseValue(properties[1], important))
2425 return false;
2426 CSSValue *value = m_parsedProperties[m_numParsedProperties-2]->value();
2427 m_implicitShorthand = true;
2428 addProperty(properties[2], value, important);
2429 value = m_parsedProperties[m_numParsedProperties-2]->value();
2430 addProperty(properties[3], value, important);
2431 m_implicitShorthand = false;
2432 break;
2433 }
2434 case 3: {
2435 if (!parseValue(properties[0], important) || !parseValue(properties[1], important) || !parseValue(properties[2], important))
2436 return false;
2437 CSSValue *value = m_parsedProperties[m_numParsedProperties-2]->value();
2438 m_implicitShorthand = true;
2439 addProperty(properties[3], value, important);
2440 m_implicitShorthand = false;
2441 break;
2442 }
2443 case 4: {
2444 if (!parseValue(properties[0], important) || !parseValue(properties[1], important) ||
2445 !parseValue(properties[2], important) || !parseValue(properties[3], important))
2446 return false;
2447 break;
2448 }
2449 default: {
2450 return false;
2451 }
2452 }
2453
2454 return true;
2455 }
2456
2457 // auto | <identifier>
parsePage(int propId,bool important)2458 bool CSSParser::parsePage(int propId, bool important)
2459 {
2460 ASSERT(propId == CSSPropertyPage);
2461
2462 if (m_valueList->size() != 1)
2463 return false;
2464
2465 CSSParserValue* value = m_valueList->current();
2466 if (!value)
2467 return false;
2468
2469 if (value->id == CSSValueAuto) {
2470 addProperty(propId, primitiveValueCache()->createIdentifierValue(value->id), important);
2471 return true;
2472 } else if (value->id == 0 && value->unit == CSSPrimitiveValue::CSS_IDENT) {
2473 addProperty(propId, primitiveValueCache()->createValue(value->string, CSSPrimitiveValue::CSS_STRING), important);
2474 return true;
2475 }
2476 return false;
2477 }
2478
2479 // <length>{1,2} | auto | [ <page-size> || [ portrait | landscape] ]
parseSize(int propId,bool important)2480 bool CSSParser::parseSize(int propId, bool important)
2481 {
2482 ASSERT(propId == CSSPropertySize);
2483
2484 if (m_valueList->size() > 2)
2485 return false;
2486
2487 CSSParserValue* value = m_valueList->current();
2488 if (!value)
2489 return false;
2490
2491 RefPtr<CSSValueList> parsedValues = CSSValueList::createSpaceSeparated();
2492
2493 // First parameter.
2494 SizeParameterType paramType = parseSizeParameter(parsedValues.get(), value, None);
2495 if (paramType == None)
2496 return false;
2497
2498 // Second parameter, if any.
2499 value = m_valueList->next();
2500 if (value) {
2501 paramType = parseSizeParameter(parsedValues.get(), value, paramType);
2502 if (paramType == None)
2503 return false;
2504 }
2505
2506 addProperty(propId, parsedValues.release(), important);
2507 return true;
2508 }
2509
parseSizeParameter(CSSValueList * parsedValues,CSSParserValue * value,SizeParameterType prevParamType)2510 CSSParser::SizeParameterType CSSParser::parseSizeParameter(CSSValueList* parsedValues, CSSParserValue* value, SizeParameterType prevParamType)
2511 {
2512 switch (value->id) {
2513 case CSSValueAuto:
2514 if (prevParamType == None) {
2515 parsedValues->append(primitiveValueCache()->createIdentifierValue(value->id));
2516 return Auto;
2517 }
2518 return None;
2519 case CSSValueLandscape:
2520 case CSSValuePortrait:
2521 if (prevParamType == None || prevParamType == PageSize) {
2522 parsedValues->append(primitiveValueCache()->createIdentifierValue(value->id));
2523 return Orientation;
2524 }
2525 return None;
2526 case CSSValueA3:
2527 case CSSValueA4:
2528 case CSSValueA5:
2529 case CSSValueB4:
2530 case CSSValueB5:
2531 case CSSValueLedger:
2532 case CSSValueLegal:
2533 case CSSValueLetter:
2534 if (prevParamType == None || prevParamType == Orientation) {
2535 // Normalize to Page Size then Orientation order by prepending.
2536 // This is not specified by the CSS3 Paged Media specification, but for simpler processing later (CSSStyleSelector::applyPageSizeProperty).
2537 parsedValues->prepend(primitiveValueCache()->createIdentifierValue(value->id));
2538 return PageSize;
2539 }
2540 return None;
2541 case 0:
2542 if (validUnit(value, FLength | FNonNeg, m_strict) && (prevParamType == None || prevParamType == Length)) {
2543 parsedValues->append(primitiveValueCache()->createValue(value->fValue, static_cast<CSSPrimitiveValue::UnitTypes>(value->unit)));
2544 return Length;
2545 }
2546 return None;
2547 default:
2548 return None;
2549 }
2550 }
2551
2552 // [ <string> <string> ]+ | inherit | none
2553 // inherit and none are handled in parseValue.
parseQuotes(int propId,bool important)2554 bool CSSParser::parseQuotes(int propId, bool important)
2555 {
2556 RefPtr<CSSValueList> values = CSSValueList::createCommaSeparated();
2557 while (CSSParserValue* val = m_valueList->current()) {
2558 RefPtr<CSSValue> parsedValue;
2559 if (val->unit == CSSPrimitiveValue::CSS_STRING)
2560 parsedValue = CSSPrimitiveValue::create(val->string, CSSPrimitiveValue::CSS_STRING);
2561 else
2562 break;
2563 values->append(parsedValue.release());
2564 m_valueList->next();
2565 }
2566 if (values->length()) {
2567 addProperty(propId, values.release(), important);
2568 m_valueList->next();
2569 return true;
2570 }
2571 return false;
2572 }
2573
2574 // [ <string> | <uri> | <counter> | attr(X) | open-quote | close-quote | no-open-quote | no-close-quote ]+ | inherit
2575 // in CSS 2.1 this got somewhat reduced:
2576 // [ <string> | attr(X) | open-quote | close-quote | no-open-quote | no-close-quote ]+ | inherit
parseContent(int propId,bool important)2577 bool CSSParser::parseContent(int propId, bool important)
2578 {
2579 RefPtr<CSSValueList> values = CSSValueList::createCommaSeparated();
2580
2581 while (CSSParserValue* val = m_valueList->current()) {
2582 RefPtr<CSSValue> parsedValue;
2583 if (val->unit == CSSPrimitiveValue::CSS_URI && m_styleSheet) {
2584 // url
2585 // FIXME: The completeURL call should be done when using the CSSImageValue,
2586 // not when creating it.
2587 parsedValue = CSSImageValue::create(m_styleSheet->completeURL(val->string));
2588 } else if (val->unit == CSSParserValue::Function) {
2589 // attr(X) | counter(X [,Y]) | counters(X, Y, [,Z]) | -webkit-gradient(...)
2590 CSSParserValueList* args = val->function->args.get();
2591 if (!args)
2592 return false;
2593 if (equalIgnoringCase(val->function->name, "attr(")) {
2594 parsedValue = parseAttr(args);
2595 if (!parsedValue)
2596 return false;
2597 } else if (equalIgnoringCase(val->function->name, "counter(")) {
2598 parsedValue = parseCounterContent(args, false);
2599 if (!parsedValue)
2600 return false;
2601 } else if (equalIgnoringCase(val->function->name, "counters(")) {
2602 parsedValue = parseCounterContent(args, true);
2603 if (!parsedValue)
2604 return false;
2605 } else if (isGeneratedImageValue(val)) {
2606 if (!parseGeneratedImage(parsedValue))
2607 return false;
2608 } else
2609 return false;
2610 } else if (val->unit == CSSPrimitiveValue::CSS_IDENT) {
2611 // open-quote
2612 // close-quote
2613 // no-open-quote
2614 // no-close-quote
2615 // inherit
2616 // FIXME: These are not yet implemented (http://bugs.webkit.org/show_bug.cgi?id=6503).
2617 // none
2618 // normal
2619 switch (val->id) {
2620 case CSSValueOpenQuote:
2621 case CSSValueCloseQuote:
2622 case CSSValueNoOpenQuote:
2623 case CSSValueNoCloseQuote:
2624 case CSSValueNone:
2625 case CSSValueNormal:
2626 parsedValue = primitiveValueCache()->createIdentifierValue(val->id);
2627 }
2628 } else if (val->unit == CSSPrimitiveValue::CSS_STRING) {
2629 parsedValue = primitiveValueCache()->createValue(val->string, CSSPrimitiveValue::CSS_STRING);
2630 }
2631 if (!parsedValue)
2632 break;
2633 values->append(parsedValue.release());
2634 m_valueList->next();
2635 }
2636
2637 if (values->length()) {
2638 addProperty(propId, values.release(), important);
2639 m_valueList->next();
2640 return true;
2641 }
2642
2643 return false;
2644 }
2645
parseAttr(CSSParserValueList * args)2646 PassRefPtr<CSSValue> CSSParser::parseAttr(CSSParserValueList* args)
2647 {
2648 if (args->size() != 1)
2649 return 0;
2650
2651 CSSParserValue* a = args->current();
2652
2653 if (a->unit != CSSPrimitiveValue::CSS_IDENT)
2654 return 0;
2655
2656 String attrName = a->string;
2657 // CSS allows identifiers with "-" at the start, like "-webkit-mask-image".
2658 // But HTML attribute names can't have those characters, and we should not
2659 // even parse them inside attr().
2660 if (attrName[0] == '-')
2661 return 0;
2662
2663 if (document() && document()->isHTMLDocument())
2664 attrName = attrName.lower();
2665
2666 return primitiveValueCache()->createValue(attrName, CSSPrimitiveValue::CSS_ATTR);
2667 }
2668
parseBackgroundColor()2669 PassRefPtr<CSSValue> CSSParser::parseBackgroundColor()
2670 {
2671 int id = m_valueList->current()->id;
2672 if (id == CSSValueWebkitText || (id >= CSSValueAqua && id <= CSSValueWindowtext) || id == CSSValueMenu || id == CSSValueCurrentcolor ||
2673 (id >= CSSValueGrey && id < CSSValueWebkitText && !m_strict))
2674 return primitiveValueCache()->createIdentifierValue(id);
2675 return parseColor();
2676 }
2677
parseFillImage(RefPtr<CSSValue> & value)2678 bool CSSParser::parseFillImage(RefPtr<CSSValue>& value)
2679 {
2680 if (m_valueList->current()->id == CSSValueNone) {
2681 value = CSSImageValue::create();
2682 return true;
2683 }
2684 if (m_valueList->current()->unit == CSSPrimitiveValue::CSS_URI) {
2685 // FIXME: The completeURL call should be done when using the CSSImageValue,
2686 // not when creating it.
2687 if (m_styleSheet)
2688 value = CSSImageValue::create(m_styleSheet->completeURL(m_valueList->current()->string));
2689 return true;
2690 }
2691
2692 if (isGeneratedImageValue(m_valueList->current()))
2693 return parseGeneratedImage(value);
2694
2695 return false;
2696 }
2697
parseFillPositionX(CSSParserValueList * valueList)2698 PassRefPtr<CSSValue> CSSParser::parseFillPositionX(CSSParserValueList* valueList)
2699 {
2700 int id = valueList->current()->id;
2701 if (id == CSSValueLeft || id == CSSValueRight || id == CSSValueCenter) {
2702 int percent = 0;
2703 if (id == CSSValueRight)
2704 percent = 100;
2705 else if (id == CSSValueCenter)
2706 percent = 50;
2707 return primitiveValueCache()->createValue(percent, CSSPrimitiveValue::CSS_PERCENTAGE);
2708 }
2709 if (validUnit(valueList->current(), FPercent | FLength, m_strict))
2710 return primitiveValueCache()->createValue(valueList->current()->fValue,
2711 (CSSPrimitiveValue::UnitTypes)valueList->current()->unit);
2712 return 0;
2713 }
2714
parseFillPositionY(CSSParserValueList * valueList)2715 PassRefPtr<CSSValue> CSSParser::parseFillPositionY(CSSParserValueList* valueList)
2716 {
2717 int id = valueList->current()->id;
2718 if (id == CSSValueTop || id == CSSValueBottom || id == CSSValueCenter) {
2719 int percent = 0;
2720 if (id == CSSValueBottom)
2721 percent = 100;
2722 else if (id == CSSValueCenter)
2723 percent = 50;
2724 return primitiveValueCache()->createValue(percent, CSSPrimitiveValue::CSS_PERCENTAGE);
2725 }
2726 if (validUnit(valueList->current(), FPercent | FLength, m_strict))
2727 return primitiveValueCache()->createValue(valueList->current()->fValue,
2728 (CSSPrimitiveValue::UnitTypes)valueList->current()->unit);
2729 return 0;
2730 }
2731
parseFillPositionComponent(CSSParserValueList * valueList,unsigned & cumulativeFlags,FillPositionFlag & individualFlag)2732 PassRefPtr<CSSValue> CSSParser::parseFillPositionComponent(CSSParserValueList* valueList, unsigned& cumulativeFlags, FillPositionFlag& individualFlag)
2733 {
2734 int id = valueList->current()->id;
2735 if (id == CSSValueLeft || id == CSSValueTop || id == CSSValueRight || id == CSSValueBottom || id == CSSValueCenter) {
2736 int percent = 0;
2737 if (id == CSSValueLeft || id == CSSValueRight) {
2738 if (cumulativeFlags & XFillPosition)
2739 return 0;
2740 cumulativeFlags |= XFillPosition;
2741 individualFlag = XFillPosition;
2742 if (id == CSSValueRight)
2743 percent = 100;
2744 }
2745 else if (id == CSSValueTop || id == CSSValueBottom) {
2746 if (cumulativeFlags & YFillPosition)
2747 return 0;
2748 cumulativeFlags |= YFillPosition;
2749 individualFlag = YFillPosition;
2750 if (id == CSSValueBottom)
2751 percent = 100;
2752 } else if (id == CSSValueCenter) {
2753 // Center is ambiguous, so we're not sure which position we've found yet, an x or a y.
2754 percent = 50;
2755 cumulativeFlags |= AmbiguousFillPosition;
2756 individualFlag = AmbiguousFillPosition;
2757 }
2758 return primitiveValueCache()->createValue(percent, CSSPrimitiveValue::CSS_PERCENTAGE);
2759 }
2760 if (validUnit(valueList->current(), FPercent | FLength, m_strict)) {
2761 if (!cumulativeFlags) {
2762 cumulativeFlags |= XFillPosition;
2763 individualFlag = XFillPosition;
2764 } else if (cumulativeFlags & (XFillPosition | AmbiguousFillPosition)) {
2765 cumulativeFlags |= YFillPosition;
2766 individualFlag = YFillPosition;
2767 } else
2768 return 0;
2769 return primitiveValueCache()->createValue(valueList->current()->fValue,
2770 (CSSPrimitiveValue::UnitTypes)valueList->current()->unit);
2771 }
2772 return 0;
2773 }
2774
parseFillPosition(CSSParserValueList * valueList,RefPtr<CSSValue> & value1,RefPtr<CSSValue> & value2)2775 void CSSParser::parseFillPosition(CSSParserValueList* valueList, RefPtr<CSSValue>& value1, RefPtr<CSSValue>& value2)
2776 {
2777 CSSParserValue* value = valueList->current();
2778
2779 // Parse the first value. We're just making sure that it is one of the valid keywords or a percentage/length.
2780 unsigned cumulativeFlags = 0;
2781 FillPositionFlag value1Flag = InvalidFillPosition;
2782 FillPositionFlag value2Flag = InvalidFillPosition;
2783 value1 = parseFillPositionComponent(valueList, cumulativeFlags, value1Flag);
2784 if (!value1)
2785 return;
2786
2787 // It only takes one value for background-position to be correctly parsed if it was specified in a shorthand (since we
2788 // can assume that any other values belong to the rest of the shorthand). If we're not parsing a shorthand, though, the
2789 // value was explicitly specified for our property.
2790 value = valueList->next();
2791
2792 // First check for the comma. If so, we are finished parsing this value or value pair.
2793 if (value && value->unit == CSSParserValue::Operator && value->iValue == ',')
2794 value = 0;
2795
2796 if (value) {
2797 value2 = parseFillPositionComponent(valueList, cumulativeFlags, value2Flag);
2798 if (value2)
2799 valueList->next();
2800 else {
2801 if (!inShorthand()) {
2802 value1.clear();
2803 return;
2804 }
2805 }
2806 }
2807
2808 if (!value2)
2809 // Only one value was specified. If that value was not a keyword, then it sets the x position, and the y position
2810 // is simply 50%. This is our default.
2811 // For keywords, the keyword was either an x-keyword (left/right), a y-keyword (top/bottom), or an ambiguous keyword (center).
2812 // For left/right/center, the default of 50% in the y is still correct.
2813 value2 = primitiveValueCache()->createValue(50, CSSPrimitiveValue::CSS_PERCENTAGE);
2814
2815 if (value1Flag == YFillPosition || value2Flag == XFillPosition)
2816 value1.swap(value2);
2817 }
2818
parseFillRepeat(RefPtr<CSSValue> & value1,RefPtr<CSSValue> & value2)2819 void CSSParser::parseFillRepeat(RefPtr<CSSValue>& value1, RefPtr<CSSValue>& value2)
2820 {
2821 CSSParserValue* value = m_valueList->current();
2822
2823 int id = m_valueList->current()->id;
2824 if (id == CSSValueRepeatX) {
2825 m_implicitShorthand = true;
2826 value1 = primitiveValueCache()->createIdentifierValue(CSSValueRepeat);
2827 value2 = primitiveValueCache()->createIdentifierValue(CSSValueNoRepeat);
2828 m_valueList->next();
2829 return;
2830 }
2831 if (id == CSSValueRepeatY) {
2832 m_implicitShorthand = true;
2833 value1 = primitiveValueCache()->createIdentifierValue(CSSValueNoRepeat);
2834 value2 = primitiveValueCache()->createIdentifierValue(CSSValueRepeat);
2835 m_valueList->next();
2836 return;
2837 }
2838 if (id == CSSValueRepeat || id == CSSValueNoRepeat || id == CSSValueRound || id == CSSValueSpace)
2839 value1 = primitiveValueCache()->createIdentifierValue(id);
2840 else {
2841 value1 = 0;
2842 return;
2843 }
2844
2845 value = m_valueList->next();
2846
2847 // First check for the comma. If so, we are finished parsing this value or value pair.
2848 if (value && value->unit == CSSParserValue::Operator && value->iValue == ',')
2849 value = 0;
2850
2851 if (value)
2852 id = m_valueList->current()->id;
2853
2854 if (value && (id == CSSValueRepeat || id == CSSValueNoRepeat || id == CSSValueRound || id == CSSValueSpace)) {
2855 value2 = primitiveValueCache()->createIdentifierValue(id);
2856 m_valueList->next();
2857 } else {
2858 // If only one value was specified, value2 is the same as value1.
2859 m_implicitShorthand = true;
2860 value2 = primitiveValueCache()->createIdentifierValue(static_cast<CSSPrimitiveValue*>(value1.get())->getIdent());
2861 }
2862 }
2863
parseFillSize(int propId,bool & allowComma)2864 PassRefPtr<CSSValue> CSSParser::parseFillSize(int propId, bool& allowComma)
2865 {
2866 allowComma = true;
2867 CSSParserValue* value = m_valueList->current();
2868
2869 if (value->id == CSSValueContain || value->id == CSSValueCover)
2870 return primitiveValueCache()->createIdentifierValue(value->id);
2871
2872 RefPtr<CSSPrimitiveValue> parsedValue1;
2873
2874 if (value->id == CSSValueAuto)
2875 parsedValue1 = primitiveValueCache()->createValue(0, CSSPrimitiveValue::CSS_UNKNOWN);
2876 else {
2877 if (!validUnit(value, FLength | FPercent, m_strict))
2878 return 0;
2879 parsedValue1 = primitiveValueCache()->createValue(value->fValue, (CSSPrimitiveValue::UnitTypes)value->unit);
2880 }
2881
2882 CSSPropertyID property = static_cast<CSSPropertyID>(propId);
2883 RefPtr<CSSPrimitiveValue> parsedValue2;
2884 if ((value = m_valueList->next())) {
2885 if (value->id == CSSValueAuto)
2886 parsedValue2 = primitiveValueCache()->createValue(0, CSSPrimitiveValue::CSS_UNKNOWN);
2887 else if (value->unit == CSSParserValue::Operator && value->iValue == ',')
2888 allowComma = false;
2889 else {
2890 if (!validUnit(value, FLength | FPercent, m_strict))
2891 return 0;
2892 parsedValue2 = primitiveValueCache()->createValue(value->fValue, (CSSPrimitiveValue::UnitTypes)value->unit);
2893 }
2894 }
2895 if (!parsedValue2) {
2896 if (property == CSSPropertyWebkitBackgroundSize || property == CSSPropertyWebkitMaskSize)
2897 parsedValue2 = parsedValue1;
2898 else
2899 parsedValue2 = primitiveValueCache()->createValue(0, CSSPrimitiveValue::CSS_UNKNOWN);
2900 }
2901
2902 return primitiveValueCache()->createValue(Pair::create(parsedValue1.release(), parsedValue2.release()));
2903 }
2904
parseFillProperty(int propId,int & propId1,int & propId2,RefPtr<CSSValue> & retValue1,RefPtr<CSSValue> & retValue2)2905 bool CSSParser::parseFillProperty(int propId, int& propId1, int& propId2,
2906 RefPtr<CSSValue>& retValue1, RefPtr<CSSValue>& retValue2)
2907 {
2908 RefPtr<CSSValueList> values;
2909 RefPtr<CSSValueList> values2;
2910 CSSParserValue* val;
2911 RefPtr<CSSValue> value;
2912 RefPtr<CSSValue> value2;
2913
2914 bool allowComma = false;
2915
2916 retValue1 = retValue2 = 0;
2917 propId1 = propId;
2918 propId2 = propId;
2919 if (propId == CSSPropertyBackgroundPosition) {
2920 propId1 = CSSPropertyBackgroundPositionX;
2921 propId2 = CSSPropertyBackgroundPositionY;
2922 } else if (propId == CSSPropertyWebkitMaskPosition) {
2923 propId1 = CSSPropertyWebkitMaskPositionX;
2924 propId2 = CSSPropertyWebkitMaskPositionY;
2925 } else if (propId == CSSPropertyBackgroundRepeat) {
2926 propId1 = CSSPropertyBackgroundRepeatX;
2927 propId2 = CSSPropertyBackgroundRepeatY;
2928 } else if (propId == CSSPropertyWebkitMaskRepeat) {
2929 propId1 = CSSPropertyWebkitMaskRepeatX;
2930 propId2 = CSSPropertyWebkitMaskRepeatY;
2931 }
2932
2933 while ((val = m_valueList->current())) {
2934 RefPtr<CSSValue> currValue;
2935 RefPtr<CSSValue> currValue2;
2936
2937 if (allowComma) {
2938 if (val->unit != CSSParserValue::Operator || val->iValue != ',')
2939 return false;
2940 m_valueList->next();
2941 allowComma = false;
2942 } else {
2943 allowComma = true;
2944 switch (propId) {
2945 case CSSPropertyBackgroundColor:
2946 currValue = parseBackgroundColor();
2947 if (currValue)
2948 m_valueList->next();
2949 break;
2950 case CSSPropertyBackgroundAttachment:
2951 case CSSPropertyWebkitMaskAttachment:
2952 if (val->id == CSSValueScroll || val->id == CSSValueFixed || val->id == CSSValueLocal) {
2953 currValue = primitiveValueCache()->createIdentifierValue(val->id);
2954 m_valueList->next();
2955 }
2956 break;
2957 case CSSPropertyBackgroundImage:
2958 case CSSPropertyWebkitMaskImage:
2959 if (parseFillImage(currValue))
2960 m_valueList->next();
2961 break;
2962 case CSSPropertyWebkitBackgroundClip:
2963 case CSSPropertyWebkitBackgroundOrigin:
2964 case CSSPropertyWebkitMaskClip:
2965 case CSSPropertyWebkitMaskOrigin:
2966 // The first three values here are deprecated and do not apply to the version of the property that has
2967 // the -webkit- prefix removed.
2968 if (val->id == CSSValueBorder || val->id == CSSValuePadding || val->id == CSSValueContent ||
2969 val->id == CSSValueBorderBox || val->id == CSSValuePaddingBox || val->id == CSSValueContentBox ||
2970 ((propId == CSSPropertyWebkitBackgroundClip || propId == CSSPropertyWebkitMaskClip) &&
2971 (val->id == CSSValueText || val->id == CSSValueWebkitText))) {
2972 currValue = primitiveValueCache()->createIdentifierValue(val->id);
2973 m_valueList->next();
2974 }
2975 break;
2976 case CSSPropertyBackgroundClip:
2977 if (parseBackgroundClip(val, currValue, primitiveValueCache()))
2978 m_valueList->next();
2979 break;
2980 case CSSPropertyBackgroundOrigin:
2981 if (val->id == CSSValueBorderBox || val->id == CSSValuePaddingBox || val->id == CSSValueContentBox) {
2982 currValue = primitiveValueCache()->createIdentifierValue(val->id);
2983 m_valueList->next();
2984 }
2985 break;
2986 case CSSPropertyBackgroundPosition:
2987 case CSSPropertyWebkitMaskPosition:
2988 parseFillPosition(m_valueList, currValue, currValue2);
2989 // parseFillPosition advances the m_valueList pointer
2990 break;
2991 case CSSPropertyBackgroundPositionX:
2992 case CSSPropertyWebkitMaskPositionX: {
2993 currValue = parseFillPositionX(m_valueList);
2994 if (currValue)
2995 m_valueList->next();
2996 break;
2997 }
2998 case CSSPropertyBackgroundPositionY:
2999 case CSSPropertyWebkitMaskPositionY: {
3000 currValue = parseFillPositionY(m_valueList);
3001 if (currValue)
3002 m_valueList->next();
3003 break;
3004 }
3005 case CSSPropertyWebkitBackgroundComposite:
3006 case CSSPropertyWebkitMaskComposite:
3007 if ((val->id >= CSSValueClear && val->id <= CSSValuePlusLighter) || val->id == CSSValueHighlight) {
3008 currValue = primitiveValueCache()->createIdentifierValue(val->id);
3009 m_valueList->next();
3010 }
3011 break;
3012 case CSSPropertyBackgroundRepeat:
3013 case CSSPropertyWebkitMaskRepeat:
3014 parseFillRepeat(currValue, currValue2);
3015 // parseFillRepeat advances the m_valueList pointer
3016 break;
3017 case CSSPropertyBackgroundSize:
3018 case CSSPropertyWebkitBackgroundSize:
3019 case CSSPropertyWebkitMaskSize: {
3020 currValue = parseFillSize(propId, allowComma);
3021 if (currValue)
3022 m_valueList->next();
3023 break;
3024 }
3025 }
3026 if (!currValue)
3027 return false;
3028
3029 if (value && !values) {
3030 values = CSSValueList::createCommaSeparated();
3031 values->append(value.release());
3032 }
3033
3034 if (value2 && !values2) {
3035 values2 = CSSValueList::createCommaSeparated();
3036 values2->append(value2.release());
3037 }
3038
3039 if (values)
3040 values->append(currValue.release());
3041 else
3042 value = currValue.release();
3043 if (currValue2) {
3044 if (values2)
3045 values2->append(currValue2.release());
3046 else
3047 value2 = currValue2.release();
3048 }
3049 }
3050
3051 // When parsing any fill shorthand property, we let it handle building up the lists for all
3052 // properties.
3053 if (inShorthand())
3054 break;
3055 }
3056
3057 if (values && values->length()) {
3058 retValue1 = values.release();
3059 if (values2 && values2->length())
3060 retValue2 = values2.release();
3061 return true;
3062 }
3063 if (value) {
3064 retValue1 = value.release();
3065 retValue2 = value2.release();
3066 return true;
3067 }
3068 return false;
3069 }
3070
parseAnimationDelay()3071 PassRefPtr<CSSValue> CSSParser::parseAnimationDelay()
3072 {
3073 CSSParserValue* value = m_valueList->current();
3074 if (validUnit(value, FTime, m_strict))
3075 return primitiveValueCache()->createValue(value->fValue, (CSSPrimitiveValue::UnitTypes)value->unit);
3076 return 0;
3077 }
3078
parseAnimationDirection()3079 PassRefPtr<CSSValue> CSSParser::parseAnimationDirection()
3080 {
3081 CSSParserValue* value = m_valueList->current();
3082 if (value->id == CSSValueNormal || value->id == CSSValueAlternate)
3083 return primitiveValueCache()->createIdentifierValue(value->id);
3084 return 0;
3085 }
3086
parseAnimationDuration()3087 PassRefPtr<CSSValue> CSSParser::parseAnimationDuration()
3088 {
3089 CSSParserValue* value = m_valueList->current();
3090 if (validUnit(value, FTime | FNonNeg, m_strict))
3091 return primitiveValueCache()->createValue(value->fValue, (CSSPrimitiveValue::UnitTypes)value->unit);
3092 return 0;
3093 }
3094
parseAnimationFillMode()3095 PassRefPtr<CSSValue> CSSParser::parseAnimationFillMode()
3096 {
3097 CSSParserValue* value = m_valueList->current();
3098 if (value->id == CSSValueNone || value->id == CSSValueForwards || value->id == CSSValueBackwards || value->id == CSSValueBoth)
3099 return primitiveValueCache()->createIdentifierValue(value->id);
3100 return 0;
3101 }
3102
parseAnimationIterationCount()3103 PassRefPtr<CSSValue> CSSParser::parseAnimationIterationCount()
3104 {
3105 CSSParserValue* value = m_valueList->current();
3106 if (value->id == CSSValueInfinite)
3107 return primitiveValueCache()->createIdentifierValue(value->id);
3108 if (validUnit(value, FInteger | FNonNeg, m_strict))
3109 return primitiveValueCache()->createValue(value->fValue, (CSSPrimitiveValue::UnitTypes)value->unit);
3110 return 0;
3111 }
3112
parseAnimationName()3113 PassRefPtr<CSSValue> CSSParser::parseAnimationName()
3114 {
3115 CSSParserValue* value = m_valueList->current();
3116 if (value->unit == CSSPrimitiveValue::CSS_STRING || value->unit == CSSPrimitiveValue::CSS_IDENT) {
3117 if (value->id == CSSValueNone || (value->unit == CSSPrimitiveValue::CSS_STRING && equalIgnoringCase(value->string, "none"))) {
3118 return primitiveValueCache()->createIdentifierValue(CSSValueNone);
3119 } else {
3120 return primitiveValueCache()->createValue(value->string, CSSPrimitiveValue::CSS_STRING);
3121 }
3122 }
3123 return 0;
3124 }
3125
parseAnimationPlayState()3126 PassRefPtr<CSSValue> CSSParser::parseAnimationPlayState()
3127 {
3128 CSSParserValue* value = m_valueList->current();
3129 if (value->id == CSSValueRunning || value->id == CSSValuePaused)
3130 return primitiveValueCache()->createIdentifierValue(value->id);
3131 return 0;
3132 }
3133
parseAnimationProperty()3134 PassRefPtr<CSSValue> CSSParser::parseAnimationProperty()
3135 {
3136 CSSParserValue* value = m_valueList->current();
3137 if (value->unit != CSSPrimitiveValue::CSS_IDENT)
3138 return 0;
3139 int result = cssPropertyID(value->string);
3140 if (result)
3141 return primitiveValueCache()->createIdentifierValue(result);
3142 if (equalIgnoringCase(value->string, "all"))
3143 return primitiveValueCache()->createIdentifierValue(CSSValueAll);
3144 if (equalIgnoringCase(value->string, "none"))
3145 return primitiveValueCache()->createIdentifierValue(CSSValueNone);
3146 return 0;
3147 }
3148
parseTransformOriginShorthand(RefPtr<CSSValue> & value1,RefPtr<CSSValue> & value2,RefPtr<CSSValue> & value3)3149 bool CSSParser::parseTransformOriginShorthand(RefPtr<CSSValue>& value1, RefPtr<CSSValue>& value2, RefPtr<CSSValue>& value3)
3150 {
3151 parseFillPosition(m_valueList, value1, value2);
3152
3153 // now get z
3154 if (m_valueList->current()) {
3155 if (validUnit(m_valueList->current(), FLength, m_strict)) {
3156 value3 = primitiveValueCache()->createValue(m_valueList->current()->fValue,
3157 (CSSPrimitiveValue::UnitTypes)m_valueList->current()->unit);
3158 m_valueList->next();
3159 return true;
3160 }
3161 return false;
3162 }
3163 return true;
3164 }
3165
parseCubicBezierTimingFunctionValue(CSSParserValueList * & args,double & result)3166 bool CSSParser::parseCubicBezierTimingFunctionValue(CSSParserValueList*& args, double& result)
3167 {
3168 CSSParserValue* v = args->current();
3169 if (!validUnit(v, FNumber, m_strict))
3170 return false;
3171 result = v->fValue;
3172 if (result < 0 || result > 1.0)
3173 return false;
3174 v = args->next();
3175 if (!v)
3176 // The last number in the function has no comma after it, so we're done.
3177 return true;
3178 if (v->unit != CSSParserValue::Operator && v->iValue != ',')
3179 return false;
3180 v = args->next();
3181 return true;
3182 }
3183
parseAnimationTimingFunction()3184 PassRefPtr<CSSValue> CSSParser::parseAnimationTimingFunction()
3185 {
3186 CSSParserValue* value = m_valueList->current();
3187 if (value->id == CSSValueEase || value->id == CSSValueLinear || value->id == CSSValueEaseIn || value->id == CSSValueEaseOut
3188 || value->id == CSSValueEaseInOut || value->id == CSSValueStepStart || value->id == CSSValueStepEnd)
3189 return primitiveValueCache()->createIdentifierValue(value->id);
3190
3191 // We must be a function.
3192 if (value->unit != CSSParserValue::Function)
3193 return 0;
3194
3195 CSSParserValueList* args = value->function->args.get();
3196
3197 if (equalIgnoringCase(value->function->name, "steps(")) {
3198 // For steps, 1 or 2 params must be specified (comma-separated)
3199 if (!args || (args->size() != 1 && args->size() != 3))
3200 return 0;
3201
3202 // There are two values.
3203 int numSteps;
3204 bool stepAtStart = false;
3205
3206 CSSParserValue* v = args->current();
3207 if (!validUnit(v, FInteger, m_strict))
3208 return 0;
3209 numSteps = (int) min(v->fValue, (double)INT_MAX);
3210 if (numSteps < 1)
3211 return 0;
3212 v = args->next();
3213
3214 if (v) {
3215 // There is a comma so we need to parse the second value
3216 if (v->unit != CSSParserValue::Operator && v->iValue != ',')
3217 return 0;
3218 v = args->next();
3219 if (v->id != CSSValueStart && v->id != CSSValueEnd)
3220 return 0;
3221 stepAtStart = v->id == CSSValueStart;
3222 }
3223
3224 return CSSStepsTimingFunctionValue::create(numSteps, stepAtStart);
3225 }
3226
3227 if (equalIgnoringCase(value->function->name, "cubic-bezier(")) {
3228 // For cubic bezier, 4 values must be specified.
3229 if (!args || args->size() != 7)
3230 return 0;
3231
3232 // There are two points specified. The values must be between 0 and 1.
3233 double x1, y1, x2, y2;
3234
3235 if (!parseCubicBezierTimingFunctionValue(args, x1))
3236 return 0;
3237 if (!parseCubicBezierTimingFunctionValue(args, y1))
3238 return 0;
3239 if (!parseCubicBezierTimingFunctionValue(args, x2))
3240 return 0;
3241 if (!parseCubicBezierTimingFunctionValue(args, y2))
3242 return 0;
3243
3244 return CSSCubicBezierTimingFunctionValue::create(x1, y1, x2, y2);
3245 }
3246
3247 return 0;
3248 }
3249
parseAnimationProperty(int propId,RefPtr<CSSValue> & result)3250 bool CSSParser::parseAnimationProperty(int propId, RefPtr<CSSValue>& result)
3251 {
3252 RefPtr<CSSValueList> values;
3253 CSSParserValue* val;
3254 RefPtr<CSSValue> value;
3255 bool allowComma = false;
3256
3257 result = 0;
3258
3259 while ((val = m_valueList->current())) {
3260 RefPtr<CSSValue> currValue;
3261 if (allowComma) {
3262 if (val->unit != CSSParserValue::Operator || val->iValue != ',')
3263 return false;
3264 m_valueList->next();
3265 allowComma = false;
3266 }
3267 else {
3268 switch (propId) {
3269 case CSSPropertyWebkitAnimationDelay:
3270 case CSSPropertyWebkitTransitionDelay:
3271 currValue = parseAnimationDelay();
3272 if (currValue)
3273 m_valueList->next();
3274 break;
3275 case CSSPropertyWebkitAnimationDirection:
3276 currValue = parseAnimationDirection();
3277 if (currValue)
3278 m_valueList->next();
3279 break;
3280 case CSSPropertyWebkitAnimationDuration:
3281 case CSSPropertyWebkitTransitionDuration:
3282 currValue = parseAnimationDuration();
3283 if (currValue)
3284 m_valueList->next();
3285 break;
3286 case CSSPropertyWebkitAnimationFillMode:
3287 currValue = parseAnimationFillMode();
3288 if (currValue)
3289 m_valueList->next();
3290 break;
3291 case CSSPropertyWebkitAnimationIterationCount:
3292 currValue = parseAnimationIterationCount();
3293 if (currValue)
3294 m_valueList->next();
3295 break;
3296 case CSSPropertyWebkitAnimationName:
3297 currValue = parseAnimationName();
3298 if (currValue)
3299 m_valueList->next();
3300 break;
3301 case CSSPropertyWebkitAnimationPlayState:
3302 currValue = parseAnimationPlayState();
3303 if (currValue)
3304 m_valueList->next();
3305 break;
3306 case CSSPropertyWebkitTransitionProperty:
3307 currValue = parseAnimationProperty();
3308 if (currValue)
3309 m_valueList->next();
3310 break;
3311 case CSSPropertyWebkitAnimationTimingFunction:
3312 case CSSPropertyWebkitTransitionTimingFunction:
3313 currValue = parseAnimationTimingFunction();
3314 if (currValue)
3315 m_valueList->next();
3316 break;
3317 }
3318
3319 if (!currValue)
3320 return false;
3321
3322 if (value && !values) {
3323 values = CSSValueList::createCommaSeparated();
3324 values->append(value.release());
3325 }
3326
3327 if (values)
3328 values->append(currValue.release());
3329 else
3330 value = currValue.release();
3331
3332 allowComma = true;
3333 }
3334
3335 // When parsing the 'transition' shorthand property, we let it handle building up the lists for all
3336 // properties.
3337 if (inShorthand())
3338 break;
3339 }
3340
3341 if (values && values->length()) {
3342 result = values.release();
3343 return true;
3344 }
3345 if (value) {
3346 result = value.release();
3347 return true;
3348 }
3349 return false;
3350 }
3351
3352
3353
3354 #if ENABLE(DASHBOARD_SUPPORT)
3355
3356 #define DASHBOARD_REGION_NUM_PARAMETERS 6
3357 #define DASHBOARD_REGION_SHORT_NUM_PARAMETERS 2
3358
skipCommaInDashboardRegion(CSSParserValueList * args)3359 static CSSParserValue* skipCommaInDashboardRegion(CSSParserValueList *args)
3360 {
3361 if (args->size() == (DASHBOARD_REGION_NUM_PARAMETERS*2-1) ||
3362 args->size() == (DASHBOARD_REGION_SHORT_NUM_PARAMETERS*2-1)) {
3363 CSSParserValue* current = args->current();
3364 if (current->unit == CSSParserValue::Operator && current->iValue == ',')
3365 return args->next();
3366 }
3367 return args->current();
3368 }
3369
parseDashboardRegions(int propId,bool important)3370 bool CSSParser::parseDashboardRegions(int propId, bool important)
3371 {
3372 bool valid = true;
3373
3374 CSSParserValue* value = m_valueList->current();
3375
3376 if (value->id == CSSValueNone) {
3377 if (m_valueList->next())
3378 return false;
3379 addProperty(propId, primitiveValueCache()->createIdentifierValue(value->id), important);
3380 return valid;
3381 }
3382
3383 RefPtr<DashboardRegion> firstRegion = DashboardRegion::create();
3384 DashboardRegion* region = 0;
3385
3386 while (value) {
3387 if (region == 0) {
3388 region = firstRegion.get();
3389 } else {
3390 RefPtr<DashboardRegion> nextRegion = DashboardRegion::create();
3391 region->m_next = nextRegion;
3392 region = nextRegion.get();
3393 }
3394
3395 if (value->unit != CSSParserValue::Function) {
3396 valid = false;
3397 break;
3398 }
3399
3400 // Commas count as values, so allow:
3401 // dashboard-region(label, type, t, r, b, l) or dashboard-region(label type t r b l)
3402 // dashboard-region(label, type, t, r, b, l) or dashboard-region(label type t r b l)
3403 // also allow
3404 // dashboard-region(label, type) or dashboard-region(label type)
3405 // dashboard-region(label, type) or dashboard-region(label type)
3406 CSSParserValueList* args = value->function->args.get();
3407 if (!equalIgnoringCase(value->function->name, "dashboard-region(") || !args) {
3408 valid = false;
3409 break;
3410 }
3411
3412 int numArgs = args->size();
3413 if ((numArgs != DASHBOARD_REGION_NUM_PARAMETERS && numArgs != (DASHBOARD_REGION_NUM_PARAMETERS*2-1)) &&
3414 (numArgs != DASHBOARD_REGION_SHORT_NUM_PARAMETERS && numArgs != (DASHBOARD_REGION_SHORT_NUM_PARAMETERS*2-1))) {
3415 valid = false;
3416 break;
3417 }
3418
3419 // First arg is a label.
3420 CSSParserValue* arg = args->current();
3421 if (arg->unit != CSSPrimitiveValue::CSS_IDENT) {
3422 valid = false;
3423 break;
3424 }
3425
3426 region->m_label = arg->string;
3427
3428 // Second arg is a type.
3429 arg = args->next();
3430 arg = skipCommaInDashboardRegion(args);
3431 if (arg->unit != CSSPrimitiveValue::CSS_IDENT) {
3432 valid = false;
3433 break;
3434 }
3435
3436 if (equalIgnoringCase(arg->string, "circle"))
3437 region->m_isCircle = true;
3438 else if (equalIgnoringCase(arg->string, "rectangle"))
3439 region->m_isRectangle = true;
3440 else {
3441 valid = false;
3442 break;
3443 }
3444
3445 region->m_geometryType = arg->string;
3446
3447 if (numArgs == DASHBOARD_REGION_SHORT_NUM_PARAMETERS || numArgs == (DASHBOARD_REGION_SHORT_NUM_PARAMETERS*2-1)) {
3448 // This originally used CSSValueInvalid by accident. It might be more logical to use something else.
3449 RefPtr<CSSPrimitiveValue> amount = primitiveValueCache()->createIdentifierValue(CSSValueInvalid);
3450
3451 region->setTop(amount);
3452 region->setRight(amount);
3453 region->setBottom(amount);
3454 region->setLeft(amount);
3455 } else {
3456 // Next four arguments must be offset numbers
3457 int i;
3458 for (i = 0; i < 4; i++) {
3459 arg = args->next();
3460 arg = skipCommaInDashboardRegion(args);
3461
3462 valid = arg->id == CSSValueAuto || validUnit(arg, FLength, m_strict);
3463 if (!valid)
3464 break;
3465
3466 RefPtr<CSSPrimitiveValue> amount = arg->id == CSSValueAuto ?
3467 primitiveValueCache()->createIdentifierValue(CSSValueAuto) :
3468 primitiveValueCache()->createValue(arg->fValue, (CSSPrimitiveValue::UnitTypes) arg->unit);
3469
3470 if (i == 0)
3471 region->setTop(amount);
3472 else if (i == 1)
3473 region->setRight(amount);
3474 else if (i == 2)
3475 region->setBottom(amount);
3476 else
3477 region->setLeft(amount);
3478 }
3479 }
3480
3481 if (args->next())
3482 return false;
3483
3484 value = m_valueList->next();
3485 }
3486
3487 if (valid)
3488 addProperty(propId, primitiveValueCache()->createValue(firstRegion.release()), important);
3489
3490 return valid;
3491 }
3492
3493 #endif /* ENABLE(DASHBOARD_SUPPORT) */
3494
parseCounterContent(CSSParserValueList * args,bool counters)3495 PassRefPtr<CSSValue> CSSParser::parseCounterContent(CSSParserValueList* args, bool counters)
3496 {
3497 unsigned numArgs = args->size();
3498 if (counters && numArgs != 3 && numArgs != 5)
3499 return 0;
3500 if (!counters && numArgs != 1 && numArgs != 3)
3501 return 0;
3502
3503 CSSParserValue* i = args->current();
3504 if (i->unit != CSSPrimitiveValue::CSS_IDENT)
3505 return 0;
3506 RefPtr<CSSPrimitiveValue> identifier = primitiveValueCache()->createValue(i->string, CSSPrimitiveValue::CSS_STRING);
3507
3508 RefPtr<CSSPrimitiveValue> separator;
3509 if (!counters)
3510 separator = primitiveValueCache()->createValue(String(), CSSPrimitiveValue::CSS_STRING);
3511 else {
3512 i = args->next();
3513 if (i->unit != CSSParserValue::Operator || i->iValue != ',')
3514 return 0;
3515
3516 i = args->next();
3517 if (i->unit != CSSPrimitiveValue::CSS_STRING)
3518 return 0;
3519
3520 separator = primitiveValueCache()->createValue(i->string, (CSSPrimitiveValue::UnitTypes) i->unit);
3521 }
3522
3523 RefPtr<CSSPrimitiveValue> listStyle;
3524 i = args->next();
3525 if (!i) // Make the list style default decimal
3526 listStyle = primitiveValueCache()->createValue(CSSValueDecimal - CSSValueDisc, CSSPrimitiveValue::CSS_NUMBER);
3527 else {
3528 if (i->unit != CSSParserValue::Operator || i->iValue != ',')
3529 return 0;
3530
3531 i = args->next();
3532 if (i->unit != CSSPrimitiveValue::CSS_IDENT)
3533 return 0;
3534
3535 short ls = 0;
3536 if (i->id == CSSValueNone)
3537 ls = CSSValueKatakanaIroha - CSSValueDisc + 1;
3538 else if (i->id >= CSSValueDisc && i->id <= CSSValueKatakanaIroha)
3539 ls = i->id - CSSValueDisc;
3540 else
3541 return 0;
3542
3543 listStyle = primitiveValueCache()->createValue(ls, (CSSPrimitiveValue::UnitTypes) i->unit);
3544 }
3545
3546 return primitiveValueCache()->createValue(Counter::create(identifier.release(), listStyle.release(), separator.release()));
3547 }
3548
parseShape(int propId,bool important)3549 bool CSSParser::parseShape(int propId, bool important)
3550 {
3551 CSSParserValue* value = m_valueList->current();
3552 CSSParserValueList* args = value->function->args.get();
3553
3554 if (!equalIgnoringCase(value->function->name, "rect(") || !args)
3555 return false;
3556
3557 // rect(t, r, b, l) || rect(t r b l)
3558 if (args->size() != 4 && args->size() != 7)
3559 return false;
3560 RefPtr<Rect> rect = Rect::create();
3561 bool valid = true;
3562 int i = 0;
3563 CSSParserValue* a = args->current();
3564 while (a) {
3565 valid = a->id == CSSValueAuto || validUnit(a, FLength, m_strict);
3566 if (!valid)
3567 break;
3568 RefPtr<CSSPrimitiveValue> length = a->id == CSSValueAuto ?
3569 primitiveValueCache()->createIdentifierValue(CSSValueAuto) :
3570 primitiveValueCache()->createValue(a->fValue, (CSSPrimitiveValue::UnitTypes) a->unit);
3571 if (i == 0)
3572 rect->setTop(length);
3573 else if (i == 1)
3574 rect->setRight(length);
3575 else if (i == 2)
3576 rect->setBottom(length);
3577 else
3578 rect->setLeft(length);
3579 a = args->next();
3580 if (a && args->size() == 7) {
3581 if (a->unit == CSSParserValue::Operator && a->iValue == ',') {
3582 a = args->next();
3583 } else {
3584 valid = false;
3585 break;
3586 }
3587 }
3588 i++;
3589 }
3590 if (valid) {
3591 addProperty(propId, primitiveValueCache()->createValue(rect.release()), important);
3592 m_valueList->next();
3593 return true;
3594 }
3595 return false;
3596 }
3597
3598 // [ 'font-style' || 'font-variant' || 'font-weight' ]? 'font-size' [ / 'line-height' ]? 'font-family'
parseFont(bool important)3599 bool CSSParser::parseFont(bool important)
3600 {
3601 bool valid = true;
3602 CSSParserValue *value = m_valueList->current();
3603 RefPtr<FontValue> font = FontValue::create();
3604 // optional font-style, font-variant and font-weight
3605 while (value) {
3606 int id = value->id;
3607 if (id) {
3608 if (id == CSSValueNormal) {
3609 // do nothing, it's the inital value for all three
3610 } else if (id == CSSValueItalic || id == CSSValueOblique) {
3611 if (font->style)
3612 return false;
3613 font->style = primitiveValueCache()->createIdentifierValue(id);
3614 } else if (id == CSSValueSmallCaps) {
3615 if (font->variant)
3616 return false;
3617 font->variant = primitiveValueCache()->createIdentifierValue(id);
3618 } else if (id >= CSSValueBold && id <= CSSValueLighter) {
3619 if (font->weight)
3620 return false;
3621 font->weight = primitiveValueCache()->createIdentifierValue(id);
3622 } else {
3623 valid = false;
3624 }
3625 } else if (!font->weight && validUnit(value, FInteger | FNonNeg, true)) {
3626 int weight = (int)value->fValue;
3627 int val = 0;
3628 if (weight == 100)
3629 val = CSSValue100;
3630 else if (weight == 200)
3631 val = CSSValue200;
3632 else if (weight == 300)
3633 val = CSSValue300;
3634 else if (weight == 400)
3635 val = CSSValue400;
3636 else if (weight == 500)
3637 val = CSSValue500;
3638 else if (weight == 600)
3639 val = CSSValue600;
3640 else if (weight == 700)
3641 val = CSSValue700;
3642 else if (weight == 800)
3643 val = CSSValue800;
3644 else if (weight == 900)
3645 val = CSSValue900;
3646
3647 if (val)
3648 font->weight = primitiveValueCache()->createIdentifierValue(val);
3649 else
3650 valid = false;
3651 } else {
3652 valid = false;
3653 }
3654 if (!valid)
3655 break;
3656 value = m_valueList->next();
3657 }
3658 if (!value)
3659 return false;
3660
3661 // set undefined values to default
3662 if (!font->style)
3663 font->style = primitiveValueCache()->createIdentifierValue(CSSValueNormal);
3664 if (!font->variant)
3665 font->variant = primitiveValueCache()->createIdentifierValue(CSSValueNormal);
3666 if (!font->weight)
3667 font->weight = primitiveValueCache()->createIdentifierValue(CSSValueNormal);
3668
3669 // now a font size _must_ come
3670 // <absolute-size> | <relative-size> | <length> | <percentage> | inherit
3671 if (value->id >= CSSValueXxSmall && value->id <= CSSValueLarger)
3672 font->size = primitiveValueCache()->createIdentifierValue(value->id);
3673 else if (validUnit(value, FLength | FPercent | FNonNeg, m_strict))
3674 font->size = primitiveValueCache()->createValue(value->fValue, (CSSPrimitiveValue::UnitTypes) value->unit);
3675 value = m_valueList->next();
3676 if (!font->size || !value)
3677 return false;
3678
3679 if (value->unit == CSSParserValue::Operator && value->iValue == '/') {
3680 // line-height
3681 value = m_valueList->next();
3682 if (!value)
3683 return false;
3684 if (value->id == CSSValueNormal) {
3685 // default value, nothing to do
3686 } else if (validUnit(value, FNumber | FLength | FPercent | FNonNeg, m_strict))
3687 font->lineHeight = primitiveValueCache()->createValue(value->fValue, (CSSPrimitiveValue::UnitTypes) value->unit);
3688 else
3689 return false;
3690 value = m_valueList->next();
3691 if (!value)
3692 return false;
3693 }
3694
3695 if (!font->lineHeight)
3696 font->lineHeight = primitiveValueCache()->createIdentifierValue(CSSValueNormal);
3697
3698 // font family must come now
3699 font->family = parseFontFamily();
3700
3701 if (m_valueList->current() || !font->family)
3702 return false;
3703
3704 addProperty(CSSPropertyFont, font.release(), important);
3705 return true;
3706 }
3707
parseFontFamily()3708 PassRefPtr<CSSValueList> CSSParser::parseFontFamily()
3709 {
3710 RefPtr<CSSValueList> list = CSSValueList::createCommaSeparated();
3711 CSSParserValue* value = m_valueList->current();
3712
3713 FontFamilyValue* currFamily = 0;
3714 while (value) {
3715 CSSParserValue* nextValue = m_valueList->next();
3716 bool nextValBreaksFont = !nextValue ||
3717 (nextValue->unit == CSSParserValue::Operator && nextValue->iValue == ',');
3718 bool nextValIsFontName = nextValue &&
3719 ((nextValue->id >= CSSValueSerif && nextValue->id <= CSSValueWebkitBody) ||
3720 (nextValue->unit == CSSPrimitiveValue::CSS_STRING || nextValue->unit == CSSPrimitiveValue::CSS_IDENT));
3721
3722 if (value->id >= CSSValueSerif && value->id <= CSSValueWebkitBody) {
3723 if (currFamily)
3724 currFamily->appendSpaceSeparated(value->string.characters, value->string.length);
3725 else if (nextValBreaksFont || !nextValIsFontName)
3726 list->append(primitiveValueCache()->createIdentifierValue(value->id));
3727 else {
3728 RefPtr<FontFamilyValue> newFamily = FontFamilyValue::create(value->string);
3729 currFamily = newFamily.get();
3730 list->append(newFamily.release());
3731 }
3732 } else if (value->unit == CSSPrimitiveValue::CSS_STRING) {
3733 // Strings never share in a family name.
3734 currFamily = 0;
3735 list->append(FontFamilyValue::create(value->string));
3736 } else if (value->unit == CSSPrimitiveValue::CSS_IDENT) {
3737 if (currFamily)
3738 currFamily->appendSpaceSeparated(value->string.characters, value->string.length);
3739 else if (nextValBreaksFont || !nextValIsFontName)
3740 list->append(FontFamilyValue::create(value->string));
3741 else {
3742 RefPtr<FontFamilyValue> newFamily = FontFamilyValue::create(value->string);
3743 currFamily = newFamily.get();
3744 list->append(newFamily.release());
3745 }
3746 } else {
3747 break;
3748 }
3749
3750 if (!nextValue)
3751 break;
3752
3753 if (nextValBreaksFont) {
3754 value = m_valueList->next();
3755 currFamily = 0;
3756 }
3757 else if (nextValIsFontName)
3758 value = nextValue;
3759 else
3760 break;
3761 }
3762 if (!list->length())
3763 list = 0;
3764 return list.release();
3765 }
3766
parseFontVariant(bool important)3767 bool CSSParser::parseFontVariant(bool important)
3768 {
3769 RefPtr<CSSValueList> values;
3770 if (m_valueList->size() > 1)
3771 values = CSSValueList::createCommaSeparated();
3772 CSSParserValue* val;
3773 bool expectComma = false;
3774 while ((val = m_valueList->current())) {
3775 RefPtr<CSSPrimitiveValue> parsedValue;
3776 if (!expectComma) {
3777 expectComma = true;
3778 if (val->id == CSSValueNormal || val->id == CSSValueSmallCaps)
3779 parsedValue = primitiveValueCache()->createIdentifierValue(val->id);
3780 else if (val->id == CSSValueAll && !values) {
3781 // 'all' is only allowed in @font-face and with no other values. Make a value list to
3782 // indicate that we are in the @font-face case.
3783 values = CSSValueList::createCommaSeparated();
3784 parsedValue = primitiveValueCache()->createIdentifierValue(val->id);
3785 }
3786 } else if (val->unit == CSSParserValue::Operator && val->iValue == ',') {
3787 expectComma = false;
3788 m_valueList->next();
3789 continue;
3790 }
3791
3792 if (!parsedValue)
3793 return false;
3794
3795 m_valueList->next();
3796
3797 if (values)
3798 values->append(parsedValue.release());
3799 else {
3800 addProperty(CSSPropertyFontVariant, parsedValue.release(), important);
3801 return true;
3802 }
3803 }
3804
3805 if (values && values->length()) {
3806 m_hasFontFaceOnlyValues = true;
3807 addProperty(CSSPropertyFontVariant, values.release(), important);
3808 return true;
3809 }
3810
3811 return false;
3812 }
3813
parseFontWeight(bool important)3814 bool CSSParser::parseFontWeight(bool important)
3815 {
3816 if (m_valueList->size() != 1)
3817 return false;
3818
3819 CSSParserValue* value = m_valueList->current();
3820 if ((value->id >= CSSValueNormal) && (value->id <= CSSValue900)) {
3821 addProperty(CSSPropertyFontWeight, primitiveValueCache()->createIdentifierValue(value->id), important);
3822 return true;
3823 }
3824
3825 if (validUnit(value, FInteger | FNonNeg, false)) {
3826 int weight = static_cast<int>(value->fValue);
3827 if (!(weight % 100) && weight >= 100 && weight <= 900)
3828 addProperty(CSSPropertyFontWeight, primitiveValueCache()->createIdentifierValue(CSSValue100 + weight / 100 - 1), important);
3829 return true;
3830 }
3831
3832 return false;
3833 }
3834
isValidFormatFunction(CSSParserValue * val)3835 static bool isValidFormatFunction(CSSParserValue* val)
3836 {
3837 CSSParserValueList* args = val->function->args.get();
3838 return equalIgnoringCase(val->function->name, "format(") && (args->current()->unit == CSSPrimitiveValue::CSS_STRING || args->current()->unit == CSSPrimitiveValue::CSS_IDENT);
3839 }
3840
parseFontFaceSrc()3841 bool CSSParser::parseFontFaceSrc()
3842 {
3843 RefPtr<CSSValueList> values(CSSValueList::createCommaSeparated());
3844 CSSParserValue* val;
3845 bool expectComma = false;
3846 bool allowFormat = false;
3847 bool failed = false;
3848 RefPtr<CSSFontFaceSrcValue> uriValue;
3849 while ((val = m_valueList->current())) {
3850 RefPtr<CSSFontFaceSrcValue> parsedValue;
3851 if (val->unit == CSSPrimitiveValue::CSS_URI && !expectComma && m_styleSheet) {
3852 // FIXME: The completeURL call should be done when using the CSSFontFaceSrcValue,
3853 // not when creating it.
3854 parsedValue = CSSFontFaceSrcValue::create(m_styleSheet->completeURL(val->string));
3855 uriValue = parsedValue;
3856 allowFormat = true;
3857 expectComma = true;
3858 } else if (val->unit == CSSParserValue::Function) {
3859 // There are two allowed functions: local() and format().
3860 CSSParserValueList* args = val->function->args.get();
3861 if (args && args->size() == 1) {
3862 if (equalIgnoringCase(val->function->name, "local(") && !expectComma && (args->current()->unit == CSSPrimitiveValue::CSS_STRING || args->current()->unit == CSSPrimitiveValue::CSS_IDENT)) {
3863 expectComma = true;
3864 allowFormat = false;
3865 CSSParserValue* a = args->current();
3866 uriValue.clear();
3867 parsedValue = CSSFontFaceSrcValue::createLocal(a->string);
3868 } else if (allowFormat && uriValue && isValidFormatFunction(val)) {
3869 expectComma = true;
3870 allowFormat = false;
3871 uriValue->setFormat(args->current()->string);
3872 uriValue.clear();
3873 m_valueList->next();
3874 continue;
3875 }
3876 }
3877 } else if (val->unit == CSSParserValue::Operator && val->iValue == ',' && expectComma) {
3878 expectComma = false;
3879 allowFormat = false;
3880 uriValue.clear();
3881 m_valueList->next();
3882 continue;
3883 }
3884
3885 if (parsedValue)
3886 values->append(parsedValue.release());
3887 else {
3888 failed = true;
3889 break;
3890 }
3891 m_valueList->next();
3892 }
3893
3894 if (values->length() && !failed) {
3895 addProperty(CSSPropertySrc, values.release(), m_important);
3896 m_valueList->next();
3897 return true;
3898 }
3899
3900 return false;
3901 }
3902
parseFontFaceUnicodeRange()3903 bool CSSParser::parseFontFaceUnicodeRange()
3904 {
3905 RefPtr<CSSValueList> values = CSSValueList::createCommaSeparated();
3906 bool failed = false;
3907 bool operatorExpected = false;
3908 for (; m_valueList->current(); m_valueList->next(), operatorExpected = !operatorExpected) {
3909 if (operatorExpected) {
3910 if (m_valueList->current()->unit == CSSParserValue::Operator && m_valueList->current()->iValue == ',')
3911 continue;
3912 failed = true;
3913 break;
3914 }
3915 if (m_valueList->current()->unit != CSSPrimitiveValue::CSS_UNICODE_RANGE) {
3916 failed = true;
3917 break;
3918 }
3919
3920 String rangeString = m_valueList->current()->string;
3921 UChar32 from = 0;
3922 UChar32 to = 0;
3923 unsigned length = rangeString.length();
3924
3925 if (length < 3) {
3926 failed = true;
3927 break;
3928 }
3929
3930 unsigned i = 2;
3931 while (i < length) {
3932 UChar c = rangeString[i];
3933 if (c == '-' || c == '?')
3934 break;
3935 from *= 16;
3936 if (c >= '0' && c <= '9')
3937 from += c - '0';
3938 else if (c >= 'A' && c <= 'F')
3939 from += 10 + c - 'A';
3940 else if (c >= 'a' && c <= 'f')
3941 from += 10 + c - 'a';
3942 else {
3943 failed = true;
3944 break;
3945 }
3946 i++;
3947 }
3948 if (failed)
3949 break;
3950
3951 if (i == length)
3952 to = from;
3953 else if (rangeString[i] == '?') {
3954 unsigned span = 1;
3955 while (i < length && rangeString[i] == '?') {
3956 span *= 16;
3957 from *= 16;
3958 i++;
3959 }
3960 if (i < length)
3961 failed = true;
3962 to = from + span - 1;
3963 } else {
3964 if (length < i + 2) {
3965 failed = true;
3966 break;
3967 }
3968 i++;
3969 while (i < length) {
3970 UChar c = rangeString[i];
3971 to *= 16;
3972 if (c >= '0' && c <= '9')
3973 to += c - '0';
3974 else if (c >= 'A' && c <= 'F')
3975 to += 10 + c - 'A';
3976 else if (c >= 'a' && c <= 'f')
3977 to += 10 + c - 'a';
3978 else {
3979 failed = true;
3980 break;
3981 }
3982 i++;
3983 }
3984 if (failed)
3985 break;
3986 }
3987 if (from <= to)
3988 values->append(CSSUnicodeRangeValue::create(from, to));
3989 }
3990 if (failed || !values->length())
3991 return false;
3992 addProperty(CSSPropertyUnicodeRange, values.release(), m_important);
3993 return true;
3994 }
3995
3996 // Returns the number of characters which form a valid double
3997 // and are terminated by the given terminator character
checkForValidDouble(const UChar * string,const UChar * end,const char terminator)3998 static int checkForValidDouble(const UChar* string, const UChar* end, const char terminator)
3999 {
4000 int length = end - string;
4001 if (length < 1)
4002 return 0;
4003
4004 bool decimalMarkSeen = false;
4005 int processedLength = 0;
4006
4007 for (int i = 0; i < length; ++i) {
4008 if (string[i] == terminator) {
4009 processedLength = i;
4010 break;
4011 }
4012 if (!isASCIIDigit(string[i])) {
4013 if (!decimalMarkSeen && string[i] == '.')
4014 decimalMarkSeen = true;
4015 else
4016 return 0;
4017 }
4018 }
4019
4020 if (decimalMarkSeen && processedLength == 1)
4021 return 0;
4022
4023 return processedLength;
4024 }
4025
4026 // Returns the number of characters consumed for parsing a valid double
4027 // terminated by the given terminator character
parseDouble(const UChar * string,const UChar * end,const char terminator,double & value)4028 static int parseDouble(const UChar* string, const UChar* end, const char terminator, double& value)
4029 {
4030 int length = checkForValidDouble(string, end, terminator);
4031 if (!length)
4032 return 0;
4033
4034 int position = 0;
4035 double localValue = 0;
4036
4037 // The consumed characters here are guaranteed to be
4038 // ASCII digits with or without a decimal mark
4039 for (; position < length; ++position) {
4040 if (string[position] == '.')
4041 break;
4042 localValue = localValue * 10 + string[position] - '0';
4043 }
4044
4045 if (++position == length) {
4046 value = localValue;
4047 return length;
4048 }
4049
4050 double fraction = 0;
4051 double scale = 1;
4052
4053 while (position < length && scale < MAX_SCALE) {
4054 fraction = fraction * 10 + string[position++] - '0';
4055 scale *= 10;
4056 }
4057
4058 value = localValue + fraction / scale;
4059 return length;
4060 }
4061
parseColorIntOrPercentage(const UChar * & string,const UChar * end,const char terminator,CSSPrimitiveValue::UnitTypes & expect,int & value)4062 static bool parseColorIntOrPercentage(const UChar*& string, const UChar* end, const char terminator, CSSPrimitiveValue::UnitTypes& expect, int& value)
4063 {
4064 const UChar* current = string;
4065 double localValue = 0;
4066 bool negative = false;
4067 while (current != end && isHTMLSpace(*current))
4068 current++;
4069 if (current != end && *current == '-') {
4070 negative = true;
4071 current++;
4072 }
4073 if (current == end || !isASCIIDigit(*current))
4074 return false;
4075 while (current != end && isASCIIDigit(*current)) {
4076 double newValue = localValue * 10 + *current++ - '0';
4077 if (newValue >= 255) {
4078 // Clamp values at 255.
4079 localValue = 255;
4080 while (current != end && isASCIIDigit(*current))
4081 ++current;
4082 break;
4083 }
4084 localValue = newValue;
4085 }
4086
4087 if (current == end)
4088 return false;
4089
4090 if (expect == CSSPrimitiveValue::CSS_NUMBER && (*current == '.' || *current == '%'))
4091 return false;
4092
4093 if (*current == '.') {
4094 // We already parsed the integral part, try to parse
4095 // the fraction part of the percentage value.
4096 double percentage = 0;
4097 int numCharactersParsed = parseDouble(current, end, '%', percentage);
4098 if (!numCharactersParsed)
4099 return false;
4100 current += numCharactersParsed;
4101 if (*current != '%')
4102 return false;
4103 localValue += percentage;
4104 }
4105
4106 if (expect == CSSPrimitiveValue::CSS_PERCENTAGE && *current != '%')
4107 return false;
4108
4109 if (*current == '%') {
4110 expect = CSSPrimitiveValue::CSS_PERCENTAGE;
4111 localValue = localValue / 100.0 * 256.0;
4112 // Clamp values at 255 for percentages over 100%
4113 if (localValue > 255)
4114 localValue = 255;
4115 current++;
4116 } else
4117 expect = CSSPrimitiveValue::CSS_NUMBER;
4118
4119 while (current != end && isHTMLSpace(*current))
4120 current++;
4121 if (current == end || *current++ != terminator)
4122 return false;
4123 // Clamp negative values at zero.
4124 value = negative ? 0 : static_cast<int>(localValue);
4125 string = current;
4126 return true;
4127 }
4128
isTenthAlpha(const UChar * string,const int length)4129 static inline bool isTenthAlpha(const UChar* string, const int length)
4130 {
4131 // "0.X"
4132 if (length == 3 && string[0] == '0' && string[1] == '.' && isASCIIDigit(string[2]))
4133 return true;
4134
4135 // ".X"
4136 if (length == 2 && string[0] == '.' && isASCIIDigit(string[1]))
4137 return true;
4138
4139 return false;
4140 }
4141
parseAlphaValue(const UChar * & string,const UChar * end,const char terminator,int & value)4142 static inline bool parseAlphaValue(const UChar*& string, const UChar* end, const char terminator, int& value)
4143 {
4144 while (string != end && isHTMLSpace(*string))
4145 string++;
4146
4147 bool negative = false;
4148
4149 if (string != end && *string == '-') {
4150 negative = true;
4151 string++;
4152 }
4153
4154 value = 0;
4155
4156 int length = end - string;
4157 if (length < 2)
4158 return false;
4159
4160 if (string[length - 1] != terminator)
4161 return false;
4162
4163 if (string[0] != '0' && string[0] != '1' && string[0] != '.') {
4164 if (checkForValidDouble(string, end, terminator)) {
4165 value = negative ? 0 : 255;
4166 string = end;
4167 return true;
4168 }
4169 return false;
4170 }
4171
4172 if (length == 2 && string[0] != '.') {
4173 value = !negative && string[0] == '1' ? 255 : 0;
4174 string = end;
4175 return true;
4176 }
4177
4178 if (isTenthAlpha(string, length - 1)) {
4179 static const int tenthAlphaValues[] = { 0, 25, 51, 76, 102, 127, 153, 179, 204, 230 };
4180 value = negative ? 0 : tenthAlphaValues[string[length - 2] - '0'];
4181 string = end;
4182 return true;
4183 }
4184
4185 double alpha = 0;
4186 if (!parseDouble(string, end, terminator, alpha))
4187 return false;
4188 value = negative ? 0 : static_cast<int>(alpha * nextafter(256.0, 0.0));
4189 string = end;
4190 return true;
4191 }
4192
mightBeRGBA(const UChar * characters,unsigned length)4193 static inline bool mightBeRGBA(const UChar* characters, unsigned length)
4194 {
4195 if (length < 5)
4196 return false;
4197 return characters[4] == '('
4198 && (characters[0] | 0x20) == 'r'
4199 && (characters[1] | 0x20) == 'g'
4200 && (characters[2] | 0x20) == 'b'
4201 && (characters[3] | 0x20) == 'a';
4202 }
4203
mightBeRGB(const UChar * characters,unsigned length)4204 static inline bool mightBeRGB(const UChar* characters, unsigned length)
4205 {
4206 if (length < 4)
4207 return false;
4208 return characters[3] == '('
4209 && (characters[0] | 0x20) == 'r'
4210 && (characters[1] | 0x20) == 'g'
4211 && (characters[2] | 0x20) == 'b';
4212 }
4213
parseColor(const String & name,RGBA32 & rgb,bool strict)4214 bool CSSParser::parseColor(const String &name, RGBA32& rgb, bool strict)
4215 {
4216 const UChar* characters = name.characters();
4217 unsigned length = name.length();
4218 CSSPrimitiveValue::UnitTypes expect = CSSPrimitiveValue::CSS_UNKNOWN;
4219
4220 if (!strict && length >= 3) {
4221 if (name[0] == '#') {
4222 if (Color::parseHexColor(characters + 1, length - 1, rgb))
4223 return true;
4224 } else {
4225 if (Color::parseHexColor(characters, length, rgb))
4226 return true;
4227 }
4228 }
4229
4230 // Try rgba() syntax.
4231 if (mightBeRGBA(characters, length)) {
4232 const UChar* current = characters + 5;
4233 const UChar* end = characters + length;
4234 int red;
4235 int green;
4236 int blue;
4237 int alpha;
4238
4239 if (!parseColorIntOrPercentage(current, end, ',', expect, red))
4240 return false;
4241 if (!parseColorIntOrPercentage(current, end, ',', expect, green))
4242 return false;
4243 if (!parseColorIntOrPercentage(current, end, ',', expect, blue))
4244 return false;
4245 if (!parseAlphaValue(current, end, ')', alpha))
4246 return false;
4247 if (current != end)
4248 return false;
4249 rgb = makeRGBA(red, green, blue, alpha);
4250 return true;
4251 }
4252
4253 // Try rgb() syntax.
4254 if (mightBeRGB(characters, length)) {
4255 const UChar* current = characters + 4;
4256 const UChar* end = characters + length;
4257 int red;
4258 int green;
4259 int blue;
4260 if (!parseColorIntOrPercentage(current, end, ',', expect, red))
4261 return false;
4262 if (!parseColorIntOrPercentage(current, end, ',', expect, green))
4263 return false;
4264 if (!parseColorIntOrPercentage(current, end, ')', expect, blue))
4265 return false;
4266 if (current != end)
4267 return false;
4268 rgb = makeRGB(red, green, blue);
4269 return true;
4270 }
4271
4272 // Try named colors.
4273 Color tc;
4274 tc.setNamedColor(name);
4275 if (tc.isValid()) {
4276 rgb = tc.rgb();
4277 return true;
4278 }
4279 return false;
4280 }
4281
colorIntFromValue(CSSParserValue * v)4282 static inline int colorIntFromValue(CSSParserValue* v)
4283 {
4284 if (v->fValue <= 0.0)
4285 return 0;
4286
4287 if (v->unit == CSSPrimitiveValue::CSS_PERCENTAGE) {
4288 if (v->fValue >= 100.0)
4289 return 255;
4290 return static_cast<int>(v->fValue * 256.0 / 100.0);
4291 }
4292
4293 if (v->fValue >= 255.0)
4294 return 255;
4295
4296 return static_cast<int>(v->fValue);
4297 }
4298
parseColorParameters(CSSParserValue * value,int * colorArray,bool parseAlpha)4299 bool CSSParser::parseColorParameters(CSSParserValue* value, int* colorArray, bool parseAlpha)
4300 {
4301 CSSParserValueList* args = value->function->args.get();
4302 CSSParserValue* v = args->current();
4303 Units unitType = FUnknown;
4304 // Get the first value and its type
4305 if (validUnit(v, FInteger, true))
4306 unitType = FInteger;
4307 else if (validUnit(v, FPercent, true))
4308 unitType = FPercent;
4309 else
4310 return false;
4311 colorArray[0] = colorIntFromValue(v);
4312 for (int i = 1; i < 3; i++) {
4313 v = args->next();
4314 if (v->unit != CSSParserValue::Operator && v->iValue != ',')
4315 return false;
4316 v = args->next();
4317 if (!validUnit(v, unitType, true))
4318 return false;
4319 colorArray[i] = colorIntFromValue(v);
4320 }
4321 if (parseAlpha) {
4322 v = args->next();
4323 if (v->unit != CSSParserValue::Operator && v->iValue != ',')
4324 return false;
4325 v = args->next();
4326 if (!validUnit(v, FNumber, true))
4327 return false;
4328 // Convert the floating pointer number of alpha to an integer in the range [0, 256),
4329 // with an equal distribution across all 256 values.
4330 colorArray[3] = static_cast<int>(max(0.0, min(1.0, v->fValue)) * nextafter(256.0, 0.0));
4331 }
4332 return true;
4333 }
4334
4335 // The CSS3 specification defines the format of a HSL color as
4336 // hsl(<number>, <percent>, <percent>)
4337 // and with alpha, the format is
4338 // hsla(<number>, <percent>, <percent>, <number>)
4339 // The first value, HUE, is in an angle with a value between 0 and 360
parseHSLParameters(CSSParserValue * value,double * colorArray,bool parseAlpha)4340 bool CSSParser::parseHSLParameters(CSSParserValue* value, double* colorArray, bool parseAlpha)
4341 {
4342 CSSParserValueList* args = value->function->args.get();
4343 CSSParserValue* v = args->current();
4344 // Get the first value
4345 if (!validUnit(v, FNumber, true))
4346 return false;
4347 // normalize the Hue value and change it to be between 0 and 1.0
4348 colorArray[0] = (((static_cast<int>(v->fValue) % 360) + 360) % 360) / 360.0;
4349 for (int i = 1; i < 3; i++) {
4350 v = args->next();
4351 if (v->unit != CSSParserValue::Operator && v->iValue != ',')
4352 return false;
4353 v = args->next();
4354 if (!validUnit(v, FPercent, true))
4355 return false;
4356 colorArray[i] = max(0.0, min(100.0, v->fValue)) / 100.0; // needs to be value between 0 and 1.0
4357 }
4358 if (parseAlpha) {
4359 v = args->next();
4360 if (v->unit != CSSParserValue::Operator && v->iValue != ',')
4361 return false;
4362 v = args->next();
4363 if (!validUnit(v, FNumber, true))
4364 return false;
4365 colorArray[3] = max(0.0, min(1.0, v->fValue));
4366 }
4367 return true;
4368 }
4369
parseColor(CSSParserValue * value)4370 PassRefPtr<CSSPrimitiveValue> CSSParser::parseColor(CSSParserValue* value)
4371 {
4372 RGBA32 c = Color::transparent;
4373 if (!parseColorFromValue(value ? value : m_valueList->current(), c))
4374 return 0;
4375 return primitiveValueCache()->createColorValue(c);
4376 }
4377
parseColorFromValue(CSSParserValue * value,RGBA32 & c)4378 bool CSSParser::parseColorFromValue(CSSParserValue* value, RGBA32& c)
4379 {
4380 if (!m_strict && value->unit == CSSPrimitiveValue::CSS_NUMBER &&
4381 value->fValue >= 0. && value->fValue < 1000000.) {
4382 String str = String::format("%06d", (int)(value->fValue+.5));
4383 if (!CSSParser::parseColor(str, c, m_strict))
4384 return false;
4385 } else if (value->unit == CSSPrimitiveValue::CSS_PARSER_HEXCOLOR ||
4386 value->unit == CSSPrimitiveValue::CSS_IDENT ||
4387 (!m_strict && value->unit == CSSPrimitiveValue::CSS_DIMENSION)) {
4388 if (!CSSParser::parseColor(value->string, c, m_strict && value->unit == CSSPrimitiveValue::CSS_IDENT))
4389 return false;
4390 } else if (value->unit == CSSParserValue::Function &&
4391 value->function->args != 0 &&
4392 value->function->args->size() == 5 /* rgb + two commas */ &&
4393 equalIgnoringCase(value->function->name, "rgb(")) {
4394 int colorValues[3];
4395 if (!parseColorParameters(value, colorValues, false))
4396 return false;
4397 c = makeRGB(colorValues[0], colorValues[1], colorValues[2]);
4398 } else {
4399 if (value->unit == CSSParserValue::Function &&
4400 value->function->args != 0 &&
4401 value->function->args->size() == 7 /* rgba + three commas */ &&
4402 equalIgnoringCase(value->function->name, "rgba(")) {
4403 int colorValues[4];
4404 if (!parseColorParameters(value, colorValues, true))
4405 return false;
4406 c = makeRGBA(colorValues[0], colorValues[1], colorValues[2], colorValues[3]);
4407 } else if (value->unit == CSSParserValue::Function &&
4408 value->function->args != 0 &&
4409 value->function->args->size() == 5 /* hsl + two commas */ &&
4410 equalIgnoringCase(value->function->name, "hsl(")) {
4411 double colorValues[3];
4412 if (!parseHSLParameters(value, colorValues, false))
4413 return false;
4414 c = makeRGBAFromHSLA(colorValues[0], colorValues[1], colorValues[2], 1.0);
4415 } else if (value->unit == CSSParserValue::Function &&
4416 value->function->args != 0 &&
4417 value->function->args->size() == 7 /* hsla + three commas */ &&
4418 equalIgnoringCase(value->function->name, "hsla(")) {
4419 double colorValues[4];
4420 if (!parseHSLParameters(value, colorValues, true))
4421 return false;
4422 c = makeRGBAFromHSLA(colorValues[0], colorValues[1], colorValues[2], colorValues[3]);
4423 } else
4424 return false;
4425 }
4426
4427 return true;
4428 }
4429
4430 // This class tracks parsing state for shadow values. If it goes out of scope (e.g., due to an early return)
4431 // without the allowBreak bit being set, then it will clean up all of the objects and destroy them.
4432 struct ShadowParseContext {
ShadowParseContextWebCore::ShadowParseContext4433 ShadowParseContext(CSSPropertyID prop, CSSPrimitiveValueCache* primitiveValueCache)
4434 : property(prop)
4435 , m_primitiveValueCache(primitiveValueCache)
4436 , allowX(true)
4437 , allowY(false)
4438 , allowBlur(false)
4439 , allowSpread(false)
4440 , allowColor(true)
4441 , allowStyle(prop == CSSPropertyWebkitBoxShadow || prop == CSSPropertyBoxShadow)
4442 , allowBreak(true)
4443 {
4444 }
4445
allowLengthWebCore::ShadowParseContext4446 bool allowLength() { return allowX || allowY || allowBlur || allowSpread; }
4447
commitValueWebCore::ShadowParseContext4448 void commitValue()
4449 {
4450 // Handle the ,, case gracefully by doing nothing.
4451 if (x || y || blur || spread || color || style) {
4452 if (!values)
4453 values = CSSValueList::createCommaSeparated();
4454
4455 // Construct the current shadow value and add it to the list.
4456 values->append(ShadowValue::create(x.release(), y.release(), blur.release(), spread.release(), style.release(), color.release()));
4457 }
4458
4459 // Now reset for the next shadow value.
4460 x = 0;
4461 y = 0;
4462 blur = 0;
4463 spread = 0;
4464 style = 0;
4465 color = 0;
4466
4467 allowX = true;
4468 allowColor = true;
4469 allowBreak = true;
4470 allowY = false;
4471 allowBlur = false;
4472 allowSpread = false;
4473 allowStyle = property == CSSPropertyWebkitBoxShadow || property == CSSPropertyBoxShadow;
4474 }
4475
commitLengthWebCore::ShadowParseContext4476 void commitLength(CSSParserValue* v)
4477 {
4478 RefPtr<CSSPrimitiveValue> val = m_primitiveValueCache->createValue(v->fValue, (CSSPrimitiveValue::UnitTypes)v->unit);
4479
4480 if (allowX) {
4481 x = val.release();
4482 allowX = false;
4483 allowY = true;
4484 allowColor = false;
4485 allowStyle = false;
4486 allowBreak = false;
4487 } else if (allowY) {
4488 y = val.release();
4489 allowY = false;
4490 allowBlur = true;
4491 allowColor = true;
4492 allowStyle = property == CSSPropertyWebkitBoxShadow || property == CSSPropertyBoxShadow;
4493 allowBreak = true;
4494 } else if (allowBlur) {
4495 blur = val.release();
4496 allowBlur = false;
4497 allowSpread = property == CSSPropertyWebkitBoxShadow || property == CSSPropertyBoxShadow;
4498 } else if (allowSpread) {
4499 spread = val.release();
4500 allowSpread = false;
4501 }
4502 }
4503
commitColorWebCore::ShadowParseContext4504 void commitColor(PassRefPtr<CSSPrimitiveValue> val)
4505 {
4506 color = val;
4507 allowColor = false;
4508 if (allowX) {
4509 allowStyle = false;
4510 allowBreak = false;
4511 } else {
4512 allowBlur = false;
4513 allowSpread = false;
4514 allowStyle = property == CSSPropertyWebkitBoxShadow || property == CSSPropertyBoxShadow;
4515 }
4516 }
4517
commitStyleWebCore::ShadowParseContext4518 void commitStyle(CSSParserValue* v)
4519 {
4520 style = m_primitiveValueCache->createIdentifierValue(v->id);
4521 allowStyle = false;
4522 if (allowX)
4523 allowBreak = false;
4524 else {
4525 allowBlur = false;
4526 allowSpread = false;
4527 allowColor = false;
4528 }
4529 }
4530
4531 CSSPropertyID property;
4532 CSSPrimitiveValueCache* m_primitiveValueCache;
4533
4534 RefPtr<CSSValueList> values;
4535 RefPtr<CSSPrimitiveValue> x;
4536 RefPtr<CSSPrimitiveValue> y;
4537 RefPtr<CSSPrimitiveValue> blur;
4538 RefPtr<CSSPrimitiveValue> spread;
4539 RefPtr<CSSPrimitiveValue> style;
4540 RefPtr<CSSPrimitiveValue> color;
4541
4542 bool allowX;
4543 bool allowY;
4544 bool allowBlur;
4545 bool allowSpread;
4546 bool allowColor;
4547 bool allowStyle; // inset or not.
4548 bool allowBreak;
4549 };
4550
parseShadow(int propId,bool important)4551 bool CSSParser::parseShadow(int propId, bool important)
4552 {
4553 ShadowParseContext context(static_cast<CSSPropertyID>(propId), primitiveValueCache());
4554 CSSParserValue* val;
4555 while ((val = m_valueList->current())) {
4556 // Check for a comma break first.
4557 if (val->unit == CSSParserValue::Operator) {
4558 if (val->iValue != ',' || !context.allowBreak)
4559 // Other operators aren't legal or we aren't done with the current shadow
4560 // value. Treat as invalid.
4561 return false;
4562 #if ENABLE(SVG)
4563 // -webkit-svg-shadow does not support multiple values.
4564 if (static_cast<CSSPropertyID>(propId) == CSSPropertyWebkitSvgShadow)
4565 return false;
4566 #endif
4567 // The value is good. Commit it.
4568 context.commitValue();
4569 } else if (validUnit(val, FLength, true)) {
4570 // We required a length and didn't get one. Invalid.
4571 if (!context.allowLength())
4572 return false;
4573
4574 // A length is allowed here. Construct the value and add it.
4575 context.commitLength(val);
4576 } else if (val->id == CSSValueInset) {
4577 if (!context.allowStyle)
4578 return false;
4579
4580 context.commitStyle(val);
4581 } else {
4582 // The only other type of value that's ok is a color value.
4583 RefPtr<CSSPrimitiveValue> parsedColor;
4584 bool isColor = ((val->id >= CSSValueAqua && val->id <= CSSValueWindowtext) || val->id == CSSValueMenu ||
4585 (val->id >= CSSValueWebkitFocusRingColor && val->id <= CSSValueWebkitText && !m_strict));
4586 if (isColor) {
4587 if (!context.allowColor)
4588 return false;
4589 parsedColor = primitiveValueCache()->createIdentifierValue(val->id);
4590 }
4591
4592 if (!parsedColor)
4593 // It's not built-in. Try to parse it as a color.
4594 parsedColor = parseColor(val);
4595
4596 if (!parsedColor || !context.allowColor)
4597 return false; // This value is not a color or length and is invalid or
4598 // it is a color, but a color isn't allowed at this point.
4599
4600 context.commitColor(parsedColor.release());
4601 }
4602
4603 m_valueList->next();
4604 }
4605
4606 if (context.allowBreak) {
4607 context.commitValue();
4608 if (context.values->length()) {
4609 addProperty(propId, context.values.release(), important);
4610 m_valueList->next();
4611 return true;
4612 }
4613 }
4614
4615 return false;
4616 }
4617
parseReflect(int propId,bool important)4618 bool CSSParser::parseReflect(int propId, bool important)
4619 {
4620 // box-reflect: <direction> <offset> <mask>
4621
4622 // Direction comes first.
4623 CSSParserValue* val = m_valueList->current();
4624 CSSReflectionDirection direction;
4625 switch (val->id) {
4626 case CSSValueAbove:
4627 direction = ReflectionAbove;
4628 break;
4629 case CSSValueBelow:
4630 direction = ReflectionBelow;
4631 break;
4632 case CSSValueLeft:
4633 direction = ReflectionLeft;
4634 break;
4635 case CSSValueRight:
4636 direction = ReflectionRight;
4637 break;
4638 default:
4639 return false;
4640 }
4641
4642 // The offset comes next.
4643 val = m_valueList->next();
4644 RefPtr<CSSPrimitiveValue> offset;
4645 if (!val)
4646 offset = primitiveValueCache()->createValue(0, CSSPrimitiveValue::CSS_PX);
4647 else {
4648 if (!validUnit(val, FLength | FPercent, m_strict))
4649 return false;
4650 offset = primitiveValueCache()->createValue(val->fValue, static_cast<CSSPrimitiveValue::UnitTypes>(val->unit));
4651 }
4652
4653 // Now for the mask.
4654 RefPtr<CSSValue> mask;
4655 val = m_valueList->next();
4656 if (val) {
4657 if (!parseBorderImage(propId, important, mask))
4658 return false;
4659 }
4660
4661 RefPtr<CSSReflectValue> reflectValue = CSSReflectValue::create(direction, offset.release(), mask.release());
4662 addProperty(propId, reflectValue.release(), important);
4663 m_valueList->next();
4664 return true;
4665 }
4666
4667 struct BorderImageParseContext {
BorderImageParseContextWebCore::BorderImageParseContext4668 BorderImageParseContext(CSSPrimitiveValueCache* primitiveValueCache)
4669 : m_primitiveValueCache(primitiveValueCache)
4670 , m_allowBreak(false)
4671 , m_allowNumber(false)
4672 , m_allowSlash(false)
4673 , m_allowWidth(false)
4674 , m_allowRule(false)
4675 , m_borderTop(0)
4676 , m_borderRight(0)
4677 , m_borderBottom(0)
4678 , m_borderLeft(0)
4679 , m_horizontalRule(0)
4680 , m_verticalRule(0)
4681 {}
4682
allowBreakWebCore::BorderImageParseContext4683 bool allowBreak() const { return m_allowBreak; }
allowNumberWebCore::BorderImageParseContext4684 bool allowNumber() const { return m_allowNumber; }
allowSlashWebCore::BorderImageParseContext4685 bool allowSlash() const { return m_allowSlash; }
allowWidthWebCore::BorderImageParseContext4686 bool allowWidth() const { return m_allowWidth; }
allowRuleWebCore::BorderImageParseContext4687 bool allowRule() const { return m_allowRule; }
4688
commitImageWebCore::BorderImageParseContext4689 void commitImage(PassRefPtr<CSSValue> image) { m_image = image; m_allowNumber = true; }
commitNumberWebCore::BorderImageParseContext4690 void commitNumber(CSSParserValue* v)
4691 {
4692 PassRefPtr<CSSPrimitiveValue> val = m_primitiveValueCache->createValue(v->fValue, (CSSPrimitiveValue::UnitTypes)v->unit);
4693 if (!m_top)
4694 m_top = val;
4695 else if (!m_right)
4696 m_right = val;
4697 else if (!m_bottom)
4698 m_bottom = val;
4699 else {
4700 ASSERT(!m_left);
4701 m_left = val;
4702 }
4703
4704 m_allowBreak = m_allowSlash = m_allowRule = true;
4705 m_allowNumber = !m_left;
4706 }
commitSlashWebCore::BorderImageParseContext4707 void commitSlash() { m_allowBreak = m_allowSlash = m_allowNumber = false; m_allowWidth = true; }
commitWidthWebCore::BorderImageParseContext4708 void commitWidth(CSSParserValue* val)
4709 {
4710 if (!m_borderTop)
4711 m_borderTop = val;
4712 else if (!m_borderRight)
4713 m_borderRight = val;
4714 else if (!m_borderBottom)
4715 m_borderBottom = val;
4716 else {
4717 ASSERT(!m_borderLeft);
4718 m_borderLeft = val;
4719 }
4720
4721 m_allowBreak = m_allowRule = true;
4722 m_allowWidth = !m_borderLeft;
4723 }
commitRuleWebCore::BorderImageParseContext4724 void commitRule(int keyword)
4725 {
4726 if (!m_horizontalRule)
4727 m_horizontalRule = keyword;
4728 else if (!m_verticalRule)
4729 m_verticalRule = keyword;
4730 m_allowRule = !m_verticalRule;
4731 }
commitBorderImageWebCore::BorderImageParseContext4732 PassRefPtr<CSSValue> commitBorderImage(CSSParser* p, bool important)
4733 {
4734 // We need to clone and repeat values for any omissions.
4735 if (!m_right) {
4736 m_right = m_primitiveValueCache->createValue(m_top->getDoubleValue(), (CSSPrimitiveValue::UnitTypes)m_top->primitiveType());
4737 m_bottom = m_primitiveValueCache->createValue(m_top->getDoubleValue(), (CSSPrimitiveValue::UnitTypes)m_top->primitiveType());
4738 m_left = m_primitiveValueCache->createValue(m_top->getDoubleValue(), (CSSPrimitiveValue::UnitTypes)m_top->primitiveType());
4739 }
4740 if (!m_bottom) {
4741 m_bottom = m_primitiveValueCache->createValue(m_top->getDoubleValue(), (CSSPrimitiveValue::UnitTypes)m_top->primitiveType());
4742 m_left = m_primitiveValueCache->createValue(m_right->getDoubleValue(), (CSSPrimitiveValue::UnitTypes)m_right->primitiveType());
4743 }
4744 if (!m_left)
4745 m_left = m_primitiveValueCache->createValue(m_right->getDoubleValue(), (CSSPrimitiveValue::UnitTypes)m_right->primitiveType());
4746
4747 // Now build a rect value to hold all four of our primitive values.
4748 RefPtr<Rect> rect = Rect::create();
4749 rect->setTop(m_top);
4750 rect->setRight(m_right);
4751 rect->setBottom(m_bottom);
4752 rect->setLeft(m_left);
4753
4754 // Fill in STRETCH as the default if it wasn't specified.
4755 if (!m_horizontalRule)
4756 m_horizontalRule = CSSValueStretch;
4757
4758 // The vertical rule should match the horizontal rule if unspecified.
4759 if (!m_verticalRule)
4760 m_verticalRule = m_horizontalRule;
4761
4762 // Now we have to deal with the border widths. The best way to deal with these is to actually put these values into a value
4763 // list and then make our parsing machinery do the parsing.
4764 if (m_borderTop) {
4765 CSSParserValueList newList;
4766 newList.addValue(*m_borderTop);
4767 if (m_borderRight)
4768 newList.addValue(*m_borderRight);
4769 if (m_borderBottom)
4770 newList.addValue(*m_borderBottom);
4771 if (m_borderLeft)
4772 newList.addValue(*m_borderLeft);
4773 CSSParserValueList* oldList = p->m_valueList;
4774 p->m_valueList = &newList;
4775 p->parseValue(CSSPropertyBorderWidth, important);
4776 p->m_valueList = oldList;
4777 }
4778
4779 // Make our new border image value now.
4780 return CSSBorderImageValue::create(m_image, rect.release(), m_horizontalRule, m_verticalRule);
4781 }
4782
4783 CSSPrimitiveValueCache* m_primitiveValueCache;
4784
4785 bool m_allowBreak;
4786 bool m_allowNumber;
4787 bool m_allowSlash;
4788 bool m_allowWidth;
4789 bool m_allowRule;
4790
4791 RefPtr<CSSValue> m_image;
4792
4793 RefPtr<CSSPrimitiveValue> m_top;
4794 RefPtr<CSSPrimitiveValue> m_right;
4795 RefPtr<CSSPrimitiveValue> m_bottom;
4796 RefPtr<CSSPrimitiveValue> m_left;
4797
4798 CSSParserValue* m_borderTop;
4799 CSSParserValue* m_borderRight;
4800 CSSParserValue* m_borderBottom;
4801 CSSParserValue* m_borderLeft;
4802
4803 int m_horizontalRule;
4804 int m_verticalRule;
4805 };
4806
parseBorderImage(int propId,bool important,RefPtr<CSSValue> & result)4807 bool CSSParser::parseBorderImage(int propId, bool important, RefPtr<CSSValue>& result)
4808 {
4809 // Look for an image initially. If the first value is not a URI, then we're done.
4810 BorderImageParseContext context(primitiveValueCache());
4811 CSSParserValue* val = m_valueList->current();
4812 if (val->unit == CSSPrimitiveValue::CSS_URI && m_styleSheet) {
4813 // FIXME: The completeURL call should be done when using the CSSImageValue,
4814 // not when creating it.
4815 context.commitImage(CSSImageValue::create(m_styleSheet->completeURL(val->string)));
4816 } else if (isGeneratedImageValue(val)) {
4817 RefPtr<CSSValue> value;
4818 if (parseGeneratedImage(value))
4819 context.commitImage(value);
4820 else
4821 return false;
4822 } else
4823 return false;
4824
4825 while ((val = m_valueList->next())) {
4826 if (context.allowNumber() && validUnit(val, FInteger | FNonNeg | FPercent, true)) {
4827 context.commitNumber(val);
4828 } else if (propId == CSSPropertyWebkitBorderImage && context.allowSlash() && val->unit == CSSParserValue::Operator && val->iValue == '/') {
4829 context.commitSlash();
4830 } else if (context.allowWidth() &&
4831 (val->id == CSSValueThin || val->id == CSSValueMedium || val->id == CSSValueThick || validUnit(val, FLength, m_strict))) {
4832 context.commitWidth(val);
4833 } else if (context.allowRule() &&
4834 (val->id == CSSValueStretch || val->id == CSSValueRound || val->id == CSSValueRepeat)) {
4835 context.commitRule(val->id);
4836 } else {
4837 // Something invalid was encountered.
4838 return false;
4839 }
4840 }
4841
4842 if (context.allowNumber() && propId != CSSPropertyWebkitBorderImage) {
4843 // Allow the slices to be omitted for images that don't fit to a border. We just set the slices to be 0.
4844 context.m_top = primitiveValueCache()->createValue(0, CSSPrimitiveValue::CSS_NUMBER);
4845 context.m_allowBreak = true;
4846 }
4847
4848 if (context.allowBreak()) {
4849 // Need to fully commit as a single value.
4850 result = context.commitBorderImage(this, important);
4851 return true;
4852 }
4853
4854 return false;
4855 }
4856
completeBorderRadii(RefPtr<CSSPrimitiveValue> radii[4])4857 static void completeBorderRadii(RefPtr<CSSPrimitiveValue> radii[4])
4858 {
4859 if (radii[3])
4860 return;
4861 if (!radii[2]) {
4862 if (!radii[1])
4863 radii[1] = radii[0];
4864 radii[2] = radii[0];
4865 }
4866 radii[3] = radii[1];
4867 }
4868
parseBorderRadius(int propId,bool important)4869 bool CSSParser::parseBorderRadius(int propId, bool important)
4870 {
4871 unsigned num = m_valueList->size();
4872 if (num > 9)
4873 return false;
4874
4875 ShorthandScope scope(this, propId);
4876 RefPtr<CSSPrimitiveValue> radii[2][4];
4877
4878 unsigned indexAfterSlash = 0;
4879 for (unsigned i = 0; i < num; ++i) {
4880 CSSParserValue* value = m_valueList->valueAt(i);
4881 if (value->unit == CSSParserValue::Operator) {
4882 if (value->iValue != '/')
4883 return false;
4884
4885 if (!i || indexAfterSlash || i + 1 == num || num > i + 5)
4886 return false;
4887
4888 indexAfterSlash = i + 1;
4889 completeBorderRadii(radii[0]);
4890 continue;
4891 }
4892
4893 if (i - indexAfterSlash >= 4)
4894 return false;
4895
4896 if (!validUnit(value, FLength | FPercent, m_strict))
4897 return false;
4898
4899 RefPtr<CSSPrimitiveValue> radius = primitiveValueCache()->createValue(value->fValue, static_cast<CSSPrimitiveValue::UnitTypes>(value->unit));
4900
4901 if (!indexAfterSlash) {
4902 radii[0][i] = radius;
4903
4904 // Legacy syntax: -webkit-border-radius: l1 l2; is equivalent to border-radius: l1 / l2;
4905 if (num == 2 && propId == CSSPropertyWebkitBorderRadius) {
4906 indexAfterSlash = 1;
4907 completeBorderRadii(radii[0]);
4908 }
4909 } else
4910 radii[1][i - indexAfterSlash] = radius.release();
4911 }
4912
4913 if (!indexAfterSlash) {
4914 completeBorderRadii(radii[0]);
4915 for (unsigned i = 0; i < 4; ++i)
4916 radii[1][i] = radii[0][i];
4917 } else
4918 completeBorderRadii(radii[1]);
4919
4920 m_implicitShorthand = true;
4921 addProperty(CSSPropertyBorderTopLeftRadius, primitiveValueCache()->createValue(Pair::create(radii[0][0].release(), radii[1][0].release())), important);
4922 addProperty(CSSPropertyBorderTopRightRadius, primitiveValueCache()->createValue(Pair::create(radii[0][1].release(), radii[1][1].release())), important);
4923 addProperty(CSSPropertyBorderBottomRightRadius, primitiveValueCache()->createValue(Pair::create(radii[0][2].release(), radii[1][2].release())), important);
4924 addProperty(CSSPropertyBorderBottomLeftRadius, primitiveValueCache()->createValue(Pair::create(radii[0][3].release(), radii[1][3].release())), important);
4925 m_implicitShorthand = false;
4926 return true;
4927 }
4928
parseCounter(int propId,int defaultValue,bool important)4929 bool CSSParser::parseCounter(int propId, int defaultValue, bool important)
4930 {
4931 enum { ID, VAL } state = ID;
4932
4933 RefPtr<CSSValueList> list = CSSValueList::createCommaSeparated();
4934 RefPtr<CSSPrimitiveValue> counterName;
4935
4936 while (true) {
4937 CSSParserValue* val = m_valueList->current();
4938 switch (state) {
4939 case ID:
4940 if (val && val->unit == CSSPrimitiveValue::CSS_IDENT) {
4941 counterName = primitiveValueCache()->createValue(val->string, CSSPrimitiveValue::CSS_STRING);
4942 state = VAL;
4943 m_valueList->next();
4944 continue;
4945 }
4946 break;
4947 case VAL: {
4948 int i = defaultValue;
4949 if (val && val->unit == CSSPrimitiveValue::CSS_NUMBER) {
4950 i = clampToInteger(val->fValue);
4951 m_valueList->next();
4952 }
4953
4954 list->append(primitiveValueCache()->createValue(Pair::create(counterName.release(),
4955 primitiveValueCache()->createValue(i, CSSPrimitiveValue::CSS_NUMBER))));
4956 state = ID;
4957 continue;
4958 }
4959 }
4960 break;
4961 }
4962
4963 if (list->length() > 0) {
4964 addProperty(propId, list.release(), important);
4965 return true;
4966 }
4967
4968 return false;
4969 }
4970
4971 // This should go away once we drop support for -webkit-gradient
parseDeprecatedGradientPoint(CSSParserValue * a,bool horizontal,CSSPrimitiveValueCache * primitiveValueCache)4972 static PassRefPtr<CSSPrimitiveValue> parseDeprecatedGradientPoint(CSSParserValue* a, bool horizontal, CSSPrimitiveValueCache* primitiveValueCache)
4973 {
4974 RefPtr<CSSPrimitiveValue> result;
4975 if (a->unit == CSSPrimitiveValue::CSS_IDENT) {
4976 if ((equalIgnoringCase(a->string, "left") && horizontal) ||
4977 (equalIgnoringCase(a->string, "top") && !horizontal))
4978 result = primitiveValueCache->createValue(0., CSSPrimitiveValue::CSS_PERCENTAGE);
4979 else if ((equalIgnoringCase(a->string, "right") && horizontal) ||
4980 (equalIgnoringCase(a->string, "bottom") && !horizontal))
4981 result = primitiveValueCache->createValue(100., CSSPrimitiveValue::CSS_PERCENTAGE);
4982 else if (equalIgnoringCase(a->string, "center"))
4983 result = primitiveValueCache->createValue(50., CSSPrimitiveValue::CSS_PERCENTAGE);
4984 } else if (a->unit == CSSPrimitiveValue::CSS_NUMBER || a->unit == CSSPrimitiveValue::CSS_PERCENTAGE)
4985 result = primitiveValueCache->createValue(a->fValue, (CSSPrimitiveValue::UnitTypes)a->unit);
4986 return result;
4987 }
4988
parseDeprecatedGradientColorStop(CSSParser * p,CSSParserValue * a,CSSGradientColorStop & stop)4989 static bool parseDeprecatedGradientColorStop(CSSParser* p, CSSParserValue* a, CSSGradientColorStop& stop)
4990 {
4991 if (a->unit != CSSParserValue::Function)
4992 return false;
4993
4994 if (!equalIgnoringCase(a->function->name, "from(") &&
4995 !equalIgnoringCase(a->function->name, "to(") &&
4996 !equalIgnoringCase(a->function->name, "color-stop("))
4997 return false;
4998
4999 CSSParserValueList* args = a->function->args.get();
5000 if (!args)
5001 return false;
5002
5003 if (equalIgnoringCase(a->function->name, "from(") ||
5004 equalIgnoringCase(a->function->name, "to(")) {
5005 // The "from" and "to" stops expect 1 argument.
5006 if (args->size() != 1)
5007 return false;
5008
5009 if (equalIgnoringCase(a->function->name, "from("))
5010 stop.m_position = p->primitiveValueCache()->createValue(0, CSSPrimitiveValue::CSS_NUMBER);
5011 else
5012 stop.m_position = p->primitiveValueCache()->createValue(1, CSSPrimitiveValue::CSS_NUMBER);
5013
5014 int id = args->current()->id;
5015 if (id == CSSValueWebkitText || (id >= CSSValueAqua && id <= CSSValueWindowtext) || id == CSSValueMenu)
5016 stop.m_color = p->primitiveValueCache()->createIdentifierValue(id);
5017 else
5018 stop.m_color = p->parseColor(args->current());
5019 if (!stop.m_color)
5020 return false;
5021 }
5022
5023 // The "color-stop" function expects 3 arguments.
5024 if (equalIgnoringCase(a->function->name, "color-stop(")) {
5025 if (args->size() != 3)
5026 return false;
5027
5028 CSSParserValue* stopArg = args->current();
5029 if (stopArg->unit == CSSPrimitiveValue::CSS_PERCENTAGE)
5030 stop.m_position = p->primitiveValueCache()->createValue(stopArg->fValue / 100, CSSPrimitiveValue::CSS_NUMBER);
5031 else if (stopArg->unit == CSSPrimitiveValue::CSS_NUMBER)
5032 stop.m_position = p->primitiveValueCache()->createValue(stopArg->fValue, CSSPrimitiveValue::CSS_NUMBER);
5033 else
5034 return false;
5035
5036 stopArg = args->next();
5037 if (stopArg->unit != CSSParserValue::Operator || stopArg->iValue != ',')
5038 return false;
5039
5040 stopArg = args->next();
5041 int id = stopArg->id;
5042 if (id == CSSValueWebkitText || (id >= CSSValueAqua && id <= CSSValueWindowtext) || id == CSSValueMenu)
5043 stop.m_color = p->primitiveValueCache()->createIdentifierValue(id);
5044 else
5045 stop.m_color = p->parseColor(stopArg);
5046 if (!stop.m_color)
5047 return false;
5048 }
5049
5050 return true;
5051 }
5052
parseDeprecatedGradient(RefPtr<CSSValue> & gradient)5053 bool CSSParser::parseDeprecatedGradient(RefPtr<CSSValue>& gradient)
5054 {
5055 // Walk the arguments.
5056 CSSParserValueList* args = m_valueList->current()->function->args.get();
5057 if (!args || args->size() == 0)
5058 return false;
5059
5060 // The first argument is the gradient type. It is an identifier.
5061 CSSGradientType gradientType;
5062 CSSParserValue* a = args->current();
5063 if (!a || a->unit != CSSPrimitiveValue::CSS_IDENT)
5064 return false;
5065 if (equalIgnoringCase(a->string, "linear"))
5066 gradientType = CSSLinearGradient;
5067 else if (equalIgnoringCase(a->string, "radial"))
5068 gradientType = CSSRadialGradient;
5069 else
5070 return false;
5071
5072 RefPtr<CSSGradientValue> result;
5073 switch (gradientType) {
5074 case CSSLinearGradient:
5075 result = CSSLinearGradientValue::create(NonRepeating, true);
5076 break;
5077 case CSSRadialGradient:
5078 result = CSSRadialGradientValue::create(NonRepeating, true);
5079 break;
5080 }
5081
5082 // Comma.
5083 a = args->next();
5084 if (!a || a->unit != CSSParserValue::Operator || a->iValue != ',')
5085 return false;
5086
5087 // Next comes the starting point for the gradient as an x y pair. There is no
5088 // comma between the x and the y values.
5089 // First X. It can be left, right, number or percent.
5090 a = args->next();
5091 if (!a)
5092 return false;
5093 RefPtr<CSSPrimitiveValue> point = parseDeprecatedGradientPoint(a, true, primitiveValueCache());
5094 if (!point)
5095 return false;
5096 result->setFirstX(point.release());
5097
5098 // First Y. It can be top, bottom, number or percent.
5099 a = args->next();
5100 if (!a)
5101 return false;
5102 point = parseDeprecatedGradientPoint(a, false, primitiveValueCache());
5103 if (!point)
5104 return false;
5105 result->setFirstY(point.release());
5106
5107 // Comma after the first point.
5108 a = args->next();
5109 if (!a || a->unit != CSSParserValue::Operator || a->iValue != ',')
5110 return false;
5111
5112 // For radial gradients only, we now expect a numeric radius.
5113 if (gradientType == CSSRadialGradient) {
5114 a = args->next();
5115 if (!a || a->unit != CSSPrimitiveValue::CSS_NUMBER)
5116 return false;
5117 static_cast<CSSRadialGradientValue*>(result.get())->setFirstRadius(primitiveValueCache()->createValue(a->fValue, CSSPrimitiveValue::CSS_NUMBER));
5118
5119 // Comma after the first radius.
5120 a = args->next();
5121 if (!a || a->unit != CSSParserValue::Operator || a->iValue != ',')
5122 return false;
5123 }
5124
5125 // Next is the ending point for the gradient as an x, y pair.
5126 // Second X. It can be left, right, number or percent.
5127 a = args->next();
5128 if (!a)
5129 return false;
5130 point = parseDeprecatedGradientPoint(a, true, primitiveValueCache());
5131 if (!point)
5132 return false;
5133 result->setSecondX(point.release());
5134
5135 // Second Y. It can be top, bottom, number or percent.
5136 a = args->next();
5137 if (!a)
5138 return false;
5139 point = parseDeprecatedGradientPoint(a, false, primitiveValueCache());
5140 if (!point)
5141 return false;
5142 result->setSecondY(point.release());
5143
5144 // For radial gradients only, we now expect the second radius.
5145 if (gradientType == CSSRadialGradient) {
5146 // Comma after the second point.
5147 a = args->next();
5148 if (!a || a->unit != CSSParserValue::Operator || a->iValue != ',')
5149 return false;
5150
5151 a = args->next();
5152 if (!a || a->unit != CSSPrimitiveValue::CSS_NUMBER)
5153 return false;
5154 static_cast<CSSRadialGradientValue*>(result.get())->setSecondRadius(primitiveValueCache()->createValue(a->fValue, CSSPrimitiveValue::CSS_NUMBER));
5155 }
5156
5157 // We now will accept any number of stops (0 or more).
5158 a = args->next();
5159 while (a) {
5160 // Look for the comma before the next stop.
5161 if (a->unit != CSSParserValue::Operator || a->iValue != ',')
5162 return false;
5163
5164 // Now examine the stop itself.
5165 a = args->next();
5166 if (!a)
5167 return false;
5168
5169 // The function name needs to be one of "from", "to", or "color-stop."
5170 CSSGradientColorStop stop;
5171 if (!parseDeprecatedGradientColorStop(this, a, stop))
5172 return false;
5173 result->addStop(stop);
5174
5175 // Advance
5176 a = args->next();
5177 }
5178
5179 gradient = result.release();
5180 return true;
5181 }
5182
valueFromSideKeyword(CSSParserValue * a,bool & isHorizontal,CSSPrimitiveValueCache * primitiveValueCache)5183 static PassRefPtr<CSSPrimitiveValue> valueFromSideKeyword(CSSParserValue* a, bool& isHorizontal, CSSPrimitiveValueCache* primitiveValueCache)
5184 {
5185 if (a->unit != CSSPrimitiveValue::CSS_IDENT)
5186 return 0;
5187
5188 switch (a->id) {
5189 case CSSValueLeft:
5190 case CSSValueRight:
5191 isHorizontal = true;
5192 break;
5193 case CSSValueTop:
5194 case CSSValueBottom:
5195 isHorizontal = false;
5196 break;
5197 default:
5198 return 0;
5199 }
5200 return primitiveValueCache->createIdentifierValue(a->id);
5201 }
5202
parseGradientColorOrKeyword(CSSParser * p,CSSParserValue * value)5203 static PassRefPtr<CSSPrimitiveValue> parseGradientColorOrKeyword(CSSParser* p, CSSParserValue* value)
5204 {
5205 int id = value->id;
5206 if (id == CSSValueWebkitText || (id >= CSSValueAqua && id <= CSSValueWindowtext) || id == CSSValueMenu)
5207 return p->primitiveValueCache()->createIdentifierValue(id);
5208
5209 return p->parseColor(value);
5210 }
5211
parseLinearGradient(RefPtr<CSSValue> & gradient,CSSGradientRepeat repeating)5212 bool CSSParser::parseLinearGradient(RefPtr<CSSValue>& gradient, CSSGradientRepeat repeating)
5213 {
5214 RefPtr<CSSLinearGradientValue> result = CSSLinearGradientValue::create(repeating);
5215
5216 // Walk the arguments.
5217 CSSParserValueList* args = m_valueList->current()->function->args.get();
5218 if (!args || !args->size())
5219 return false;
5220
5221 CSSParserValue* a = args->current();
5222 if (!a)
5223 return false;
5224
5225 bool expectComma = false;
5226 // Look for angle.
5227 if (validUnit(a, FAngle, true)) {
5228 result->setAngle(primitiveValueCache()->createValue(a->fValue, (CSSPrimitiveValue::UnitTypes)a->unit));
5229
5230 a = args->next();
5231 expectComma = true;
5232 } else {
5233 // Look one or two optional keywords that indicate a side or corner.
5234 RefPtr<CSSPrimitiveValue> startX, startY;
5235
5236 RefPtr<CSSPrimitiveValue> location;
5237 bool isHorizontal = false;
5238 if ((location = valueFromSideKeyword(a, isHorizontal, primitiveValueCache()))) {
5239 if (isHorizontal)
5240 startX = location;
5241 else
5242 startY = location;
5243
5244 a = args->next();
5245 if (a) {
5246 if ((location = valueFromSideKeyword(a, isHorizontal, primitiveValueCache()))) {
5247 if (isHorizontal) {
5248 if (startX)
5249 return false;
5250 startX = location;
5251 } else {
5252 if (startY)
5253 return false;
5254 startY = location;
5255 }
5256
5257 a = args->next();
5258 }
5259 }
5260
5261 expectComma = true;
5262 }
5263
5264 if (!startX && !startY)
5265 startY = primitiveValueCache()->createIdentifierValue(CSSValueTop);
5266
5267 result->setFirstX(startX.release());
5268 result->setFirstY(startY.release());
5269 }
5270
5271 if (!parseGradientColorStops(args, result.get(), expectComma))
5272 return false;
5273
5274 Vector<CSSGradientColorStop>& stops = result->stops();
5275 if (stops.isEmpty())
5276 return false;
5277
5278 gradient = result.release();
5279 return true;
5280 }
5281
parseRadialGradient(RefPtr<CSSValue> & gradient,CSSGradientRepeat repeating)5282 bool CSSParser::parseRadialGradient(RefPtr<CSSValue>& gradient, CSSGradientRepeat repeating)
5283 {
5284 RefPtr<CSSRadialGradientValue> result = CSSRadialGradientValue::create(repeating);
5285
5286 // Walk the arguments.
5287 CSSParserValueList* args = m_valueList->current()->function->args.get();
5288 if (!args || !args->size())
5289 return false;
5290
5291 CSSParserValue* a = args->current();
5292 if (!a)
5293 return false;
5294
5295 bool expectComma = false;
5296
5297 // Optional background-position
5298 RefPtr<CSSValue> centerX;
5299 RefPtr<CSSValue> centerY;
5300 // parseFillPosition advances the args next pointer.
5301 parseFillPosition(args, centerX, centerY);
5302 a = args->current();
5303
5304 if (centerX || centerY) {
5305 // Comma
5306 if (a->unit != CSSParserValue::Operator || a->iValue != ',')
5307 return false;
5308
5309 a = args->next();
5310 if (!a)
5311 return false;
5312 }
5313
5314 ASSERT(!centerX || centerX->isPrimitiveValue());
5315 ASSERT(!centerY || centerY->isPrimitiveValue());
5316
5317 result->setFirstX(static_cast<CSSPrimitiveValue*>(centerX.get()));
5318 result->setSecondX(static_cast<CSSPrimitiveValue*>(centerX.get()));
5319 // CSS3 radial gradients always share the same start and end point.
5320 result->setFirstY(static_cast<CSSPrimitiveValue*>(centerY.get()));
5321 result->setSecondY(static_cast<CSSPrimitiveValue*>(centerY.get()));
5322
5323 RefPtr<CSSPrimitiveValue> shapeValue;
5324 RefPtr<CSSPrimitiveValue> sizeValue;
5325
5326 // Optional shape and/or size in any order.
5327 for (int i = 0; i < 2; ++i) {
5328 if (a->unit != CSSPrimitiveValue::CSS_IDENT)
5329 break;
5330
5331 bool foundValue = false;
5332 switch (a->id) {
5333 case CSSValueCircle:
5334 case CSSValueEllipse:
5335 shapeValue = primitiveValueCache()->createIdentifierValue(a->id);
5336 foundValue = true;
5337 break;
5338 case CSSValueClosestSide:
5339 case CSSValueClosestCorner:
5340 case CSSValueFarthestSide:
5341 case CSSValueFarthestCorner:
5342 case CSSValueContain:
5343 case CSSValueCover:
5344 sizeValue = primitiveValueCache()->createIdentifierValue(a->id);
5345 foundValue = true;
5346 break;
5347 }
5348
5349 if (foundValue) {
5350 a = args->next();
5351 if (!a)
5352 return false;
5353
5354 expectComma = true;
5355 }
5356 }
5357
5358 result->setShape(shapeValue);
5359 result->setSizingBehavior(sizeValue);
5360
5361 // Or, two lengths or percentages
5362 RefPtr<CSSPrimitiveValue> horizontalSize;
5363 RefPtr<CSSPrimitiveValue> verticalSize;
5364
5365 if (!shapeValue && !sizeValue) {
5366 if (validUnit(a, FLength | FPercent, m_strict)) {
5367 horizontalSize = primitiveValueCache()->createValue(a->fValue, (CSSPrimitiveValue::UnitTypes) a->unit);
5368 a = args->next();
5369 if (!a)
5370 return false;
5371
5372 expectComma = true;
5373 }
5374
5375 if (validUnit(a, FLength | FPercent, m_strict)) {
5376 verticalSize = primitiveValueCache()->createValue(a->fValue, (CSSPrimitiveValue::UnitTypes) a->unit);
5377
5378 a = args->next();
5379 if (!a)
5380 return false;
5381 expectComma = true;
5382 }
5383 }
5384
5385 // Must have neither or both.
5386 if (!horizontalSize != !verticalSize)
5387 return false;
5388
5389 result->setEndHorizontalSize(horizontalSize);
5390 result->setEndVerticalSize(verticalSize);
5391
5392 if (!parseGradientColorStops(args, result.get(), expectComma))
5393 return false;
5394
5395 gradient = result.release();
5396 return true;
5397 }
5398
parseGradientColorStops(CSSParserValueList * valueList,CSSGradientValue * gradient,bool expectComma)5399 bool CSSParser::parseGradientColorStops(CSSParserValueList* valueList, CSSGradientValue* gradient, bool expectComma)
5400 {
5401 CSSParserValue* a = valueList->current();
5402
5403 // Now look for color stops.
5404 while (a) {
5405 // Look for the comma before the next stop.
5406 if (expectComma) {
5407 if (a->unit != CSSParserValue::Operator || a->iValue != ',')
5408 return false;
5409
5410 a = valueList->next();
5411 if (!a)
5412 return false;
5413 }
5414
5415 // <color-stop> = <color> [ <percentage> | <length> ]?
5416 CSSGradientColorStop stop;
5417 stop.m_color = parseGradientColorOrKeyword(this, a);
5418 if (!stop.m_color)
5419 return false;
5420
5421 a = valueList->next();
5422 if (a) {
5423 if (validUnit(a, FLength | FPercent, m_strict)) {
5424 stop.m_position = primitiveValueCache()->createValue(a->fValue, (CSSPrimitiveValue::UnitTypes)a->unit);
5425 a = valueList->next();
5426 }
5427 }
5428
5429 gradient->addStop(stop);
5430 expectComma = true;
5431 }
5432
5433 // Must have 2 or more stops to be valid.
5434 return gradient->stops().size() > 1;
5435 }
5436
isGeneratedImageValue(CSSParserValue * val) const5437 bool CSSParser::isGeneratedImageValue(CSSParserValue* val) const
5438 {
5439 if (val->unit != CSSParserValue::Function)
5440 return false;
5441
5442 return equalIgnoringCase(val->function->name, "-webkit-gradient(")
5443 || equalIgnoringCase(val->function->name, "-webkit-linear-gradient(")
5444 || equalIgnoringCase(val->function->name, "-webkit-repeating-linear-gradient(")
5445 || equalIgnoringCase(val->function->name, "-webkit-radial-gradient(")
5446 || equalIgnoringCase(val->function->name, "-webkit-repeating-radial-gradient(")
5447 || equalIgnoringCase(val->function->name, "-webkit-canvas(");
5448 }
5449
parseGeneratedImage(RefPtr<CSSValue> & value)5450 bool CSSParser::parseGeneratedImage(RefPtr<CSSValue>& value)
5451 {
5452 CSSParserValue* val = m_valueList->current();
5453
5454 if (val->unit != CSSParserValue::Function)
5455 return false;
5456
5457 if (equalIgnoringCase(val->function->name, "-webkit-gradient("))
5458 return parseDeprecatedGradient(value);
5459
5460 if (equalIgnoringCase(val->function->name, "-webkit-linear-gradient("))
5461 return parseLinearGradient(value, NonRepeating);
5462
5463 if (equalIgnoringCase(val->function->name, "-webkit-repeating-linear-gradient("))
5464 return parseLinearGradient(value, Repeating);
5465
5466 if (equalIgnoringCase(val->function->name, "-webkit-radial-gradient("))
5467 return parseRadialGradient(value, NonRepeating);
5468
5469 if (equalIgnoringCase(val->function->name, "-webkit-repeating-radial-gradient("))
5470 return parseRadialGradient(value, Repeating);
5471
5472 if (equalIgnoringCase(val->function->name, "-webkit-canvas("))
5473 return parseCanvas(value);
5474
5475 return false;
5476 }
5477
parseCanvas(RefPtr<CSSValue> & canvas)5478 bool CSSParser::parseCanvas(RefPtr<CSSValue>& canvas)
5479 {
5480 RefPtr<CSSCanvasValue> result = CSSCanvasValue::create();
5481
5482 // Walk the arguments.
5483 CSSParserValueList* args = m_valueList->current()->function->args.get();
5484 if (!args || args->size() != 1)
5485 return false;
5486
5487 // The first argument is the canvas name. It is an identifier.
5488 CSSParserValue* a = args->current();
5489 if (!a || a->unit != CSSPrimitiveValue::CSS_IDENT)
5490 return false;
5491 result->setName(a->string);
5492 canvas = result;
5493 return true;
5494 }
5495
5496 class TransformOperationInfo {
5497 public:
TransformOperationInfo(const CSSParserString & name)5498 TransformOperationInfo(const CSSParserString& name)
5499 : m_type(WebKitCSSTransformValue::UnknownTransformOperation)
5500 , m_argCount(1)
5501 , m_allowSingleArgument(false)
5502 , m_unit(CSSParser::FUnknown)
5503 {
5504 if (equalIgnoringCase(name, "scale(") || equalIgnoringCase(name, "scalex(") || equalIgnoringCase(name, "scaley(") || equalIgnoringCase(name, "scalez(")) {
5505 m_unit = CSSParser::FNumber;
5506 if (equalIgnoringCase(name, "scale("))
5507 m_type = WebKitCSSTransformValue::ScaleTransformOperation;
5508 else if (equalIgnoringCase(name, "scalex("))
5509 m_type = WebKitCSSTransformValue::ScaleXTransformOperation;
5510 else if (equalIgnoringCase(name, "scaley("))
5511 m_type = WebKitCSSTransformValue::ScaleYTransformOperation;
5512 else
5513 m_type = WebKitCSSTransformValue::ScaleZTransformOperation;
5514 } else if (equalIgnoringCase(name, "scale3d(")) {
5515 m_type = WebKitCSSTransformValue::Scale3DTransformOperation;
5516 m_argCount = 5;
5517 m_unit = CSSParser::FNumber;
5518 } else if (equalIgnoringCase(name, "rotate(")) {
5519 m_type = WebKitCSSTransformValue::RotateTransformOperation;
5520 m_unit = CSSParser::FAngle;
5521 } else if (equalIgnoringCase(name, "rotatex(") ||
5522 equalIgnoringCase(name, "rotatey(") ||
5523 equalIgnoringCase(name, "rotatez(")) {
5524 m_unit = CSSParser::FAngle;
5525 if (equalIgnoringCase(name, "rotatex("))
5526 m_type = WebKitCSSTransformValue::RotateXTransformOperation;
5527 else if (equalIgnoringCase(name, "rotatey("))
5528 m_type = WebKitCSSTransformValue::RotateYTransformOperation;
5529 else
5530 m_type = WebKitCSSTransformValue::RotateZTransformOperation;
5531 } else if (equalIgnoringCase(name, "rotate3d(")) {
5532 m_type = WebKitCSSTransformValue::Rotate3DTransformOperation;
5533 m_argCount = 7;
5534 m_unit = CSSParser::FNumber;
5535 } else if (equalIgnoringCase(name, "skew(") || equalIgnoringCase(name, "skewx(") || equalIgnoringCase(name, "skewy(")) {
5536 m_unit = CSSParser::FAngle;
5537 if (equalIgnoringCase(name, "skew("))
5538 m_type = WebKitCSSTransformValue::SkewTransformOperation;
5539 else if (equalIgnoringCase(name, "skewx("))
5540 m_type = WebKitCSSTransformValue::SkewXTransformOperation;
5541 else
5542 m_type = WebKitCSSTransformValue::SkewYTransformOperation;
5543 } else if (equalIgnoringCase(name, "translate(") || equalIgnoringCase(name, "translatex(") || equalIgnoringCase(name, "translatey(") || equalIgnoringCase(name, "translatez(")) {
5544 m_unit = CSSParser::FLength | CSSParser::FPercent;
5545 if (equalIgnoringCase(name, "translate("))
5546 m_type = WebKitCSSTransformValue::TranslateTransformOperation;
5547 else if (equalIgnoringCase(name, "translatex("))
5548 m_type = WebKitCSSTransformValue::TranslateXTransformOperation;
5549 else if (equalIgnoringCase(name, "translatey("))
5550 m_type = WebKitCSSTransformValue::TranslateYTransformOperation;
5551 else
5552 m_type = WebKitCSSTransformValue::TranslateZTransformOperation;
5553 } else if (equalIgnoringCase(name, "translate3d(")) {
5554 m_type = WebKitCSSTransformValue::Translate3DTransformOperation;
5555 m_argCount = 5;
5556 m_unit = CSSParser::FLength | CSSParser::FPercent;
5557 } else if (equalIgnoringCase(name, "matrix(")) {
5558 m_type = WebKitCSSTransformValue::MatrixTransformOperation;
5559 m_argCount = 11;
5560 m_unit = CSSParser::FNumber;
5561 } else if (equalIgnoringCase(name, "matrix3d(")) {
5562 m_type = WebKitCSSTransformValue::Matrix3DTransformOperation;
5563 m_argCount = 31;
5564 m_unit = CSSParser::FNumber;
5565 } else if (equalIgnoringCase(name, "perspective(")) {
5566 m_type = WebKitCSSTransformValue::PerspectiveTransformOperation;
5567 m_unit = CSSParser::FNumber;
5568 }
5569
5570 if (equalIgnoringCase(name, "scale(") || equalIgnoringCase(name, "skew(") || equalIgnoringCase(name, "translate(")) {
5571 m_allowSingleArgument = true;
5572 m_argCount = 3;
5573 }
5574 }
5575
type() const5576 WebKitCSSTransformValue::TransformOperationType type() const { return m_type; }
argCount() const5577 unsigned argCount() const { return m_argCount; }
unit() const5578 CSSParser::Units unit() const { return m_unit; }
5579
unknown() const5580 bool unknown() const { return m_type == WebKitCSSTransformValue::UnknownTransformOperation; }
hasCorrectArgCount(unsigned argCount)5581 bool hasCorrectArgCount(unsigned argCount) { return m_argCount == argCount || (m_allowSingleArgument && argCount == 1); }
5582
5583 private:
5584 WebKitCSSTransformValue::TransformOperationType m_type;
5585 unsigned m_argCount;
5586 bool m_allowSingleArgument;
5587 CSSParser::Units m_unit;
5588 };
5589
parseTransform()5590 PassRefPtr<CSSValueList> CSSParser::parseTransform()
5591 {
5592 if (!m_valueList)
5593 return 0;
5594
5595 // The transform is a list of functional primitives that specify transform operations.
5596 // We collect a list of WebKitCSSTransformValues, where each value specifies a single operation.
5597 RefPtr<CSSValueList> list = CSSValueList::createSpaceSeparated();
5598 for (CSSParserValue* value = m_valueList->current(); value; value = m_valueList->next()) {
5599 if (value->unit != CSSParserValue::Function || !value->function)
5600 return 0;
5601
5602 // Every primitive requires at least one argument.
5603 CSSParserValueList* args = value->function->args.get();
5604 if (!args)
5605 return 0;
5606
5607 // See if the specified primitive is one we understand.
5608 TransformOperationInfo info(value->function->name);
5609 if (info.unknown())
5610 return 0;
5611
5612 if (!info.hasCorrectArgCount(args->size()))
5613 return 0;
5614
5615 // Create the new WebKitCSSTransformValue for this operation and add it to our list.
5616 RefPtr<WebKitCSSTransformValue> transformValue = WebKitCSSTransformValue::create(info.type());
5617 list->append(transformValue);
5618
5619 // Snag our values.
5620 CSSParserValue* a = args->current();
5621 unsigned argNumber = 0;
5622 while (a) {
5623 CSSParser::Units unit = info.unit();
5624
5625 if (info.type() == WebKitCSSTransformValue::Rotate3DTransformOperation && argNumber == 3) {
5626 // 4th param of rotate3d() is an angle rather than a bare number, validate it as such
5627 if (!validUnit(a, FAngle, true))
5628 return 0;
5629 } else if (info.type() == WebKitCSSTransformValue::Translate3DTransformOperation && argNumber == 2) {
5630 // 3rd param of translate3d() cannot be a percentage
5631 if (!validUnit(a, FLength, true))
5632 return 0;
5633 } else if (info.type() == WebKitCSSTransformValue::TranslateZTransformOperation && argNumber == 0) {
5634 // 1st param of translateZ() cannot be a percentage
5635 if (!validUnit(a, FLength, true))
5636 return 0;
5637 } else if (info.type() == WebKitCSSTransformValue::PerspectiveTransformOperation && argNumber == 0) {
5638 // 1st param of perspective() must be a non-negative number (deprecated) or length.
5639 if (!validUnit(a, FNumber | FLength | FNonNeg, true))
5640 return 0;
5641 } else if (!validUnit(a, unit, true))
5642 return 0;
5643
5644 // Add the value to the current transform operation.
5645 transformValue->append(primitiveValueCache()->createValue(a->fValue, (CSSPrimitiveValue::UnitTypes) a->unit));
5646
5647 a = args->next();
5648 if (!a)
5649 break;
5650 if (a->unit != CSSParserValue::Operator || a->iValue != ',')
5651 return 0;
5652 a = args->next();
5653
5654 argNumber++;
5655 }
5656 }
5657
5658 return list.release();
5659 }
5660
parseTransformOrigin(int propId,int & propId1,int & propId2,int & propId3,RefPtr<CSSValue> & value,RefPtr<CSSValue> & value2,RefPtr<CSSValue> & value3)5661 bool CSSParser::parseTransformOrigin(int propId, int& propId1, int& propId2, int& propId3, RefPtr<CSSValue>& value, RefPtr<CSSValue>& value2, RefPtr<CSSValue>& value3)
5662 {
5663 propId1 = propId;
5664 propId2 = propId;
5665 propId3 = propId;
5666 if (propId == CSSPropertyWebkitTransformOrigin) {
5667 propId1 = CSSPropertyWebkitTransformOriginX;
5668 propId2 = CSSPropertyWebkitTransformOriginY;
5669 propId3 = CSSPropertyWebkitTransformOriginZ;
5670 }
5671
5672 switch (propId) {
5673 case CSSPropertyWebkitTransformOrigin:
5674 if (!parseTransformOriginShorthand(value, value2, value3))
5675 return false;
5676 // parseTransformOriginShorthand advances the m_valueList pointer
5677 break;
5678 case CSSPropertyWebkitTransformOriginX: {
5679 value = parseFillPositionX(m_valueList);
5680 if (value)
5681 m_valueList->next();
5682 break;
5683 }
5684 case CSSPropertyWebkitTransformOriginY: {
5685 value = parseFillPositionY(m_valueList);
5686 if (value)
5687 m_valueList->next();
5688 break;
5689 }
5690 case CSSPropertyWebkitTransformOriginZ: {
5691 if (validUnit(m_valueList->current(), FLength, m_strict))
5692 value = primitiveValueCache()->createValue(m_valueList->current()->fValue, (CSSPrimitiveValue::UnitTypes)m_valueList->current()->unit);
5693 if (value)
5694 m_valueList->next();
5695 break;
5696 }
5697 }
5698
5699 return value;
5700 }
5701
parsePerspectiveOrigin(int propId,int & propId1,int & propId2,RefPtr<CSSValue> & value,RefPtr<CSSValue> & value2)5702 bool CSSParser::parsePerspectiveOrigin(int propId, int& propId1, int& propId2, RefPtr<CSSValue>& value, RefPtr<CSSValue>& value2)
5703 {
5704 propId1 = propId;
5705 propId2 = propId;
5706 if (propId == CSSPropertyWebkitPerspectiveOrigin) {
5707 propId1 = CSSPropertyWebkitPerspectiveOriginX;
5708 propId2 = CSSPropertyWebkitPerspectiveOriginY;
5709 }
5710
5711 switch (propId) {
5712 case CSSPropertyWebkitPerspectiveOrigin:
5713 parseFillPosition(m_valueList, value, value2);
5714 break;
5715 case CSSPropertyWebkitPerspectiveOriginX: {
5716 value = parseFillPositionX(m_valueList);
5717 if (value)
5718 m_valueList->next();
5719 break;
5720 }
5721 case CSSPropertyWebkitPerspectiveOriginY: {
5722 value = parseFillPositionY(m_valueList);
5723 if (value)
5724 m_valueList->next();
5725 break;
5726 }
5727 }
5728
5729 return value;
5730 }
5731
parseTextEmphasisStyle(bool important)5732 bool CSSParser::parseTextEmphasisStyle(bool important)
5733 {
5734 unsigned valueListSize = m_valueList->size();
5735
5736 RefPtr<CSSPrimitiveValue> fill;
5737 RefPtr<CSSPrimitiveValue> shape;
5738
5739 for (CSSParserValue* value = m_valueList->current(); value; value = m_valueList->next()) {
5740 if (value->unit == CSSPrimitiveValue::CSS_STRING) {
5741 if (fill || shape || (valueListSize != 1 && !inShorthand()))
5742 return false;
5743 addProperty(CSSPropertyWebkitTextEmphasisStyle, primitiveValueCache()->createValue(value->string, CSSPrimitiveValue::CSS_STRING), important);
5744 m_valueList->next();
5745 return true;
5746 }
5747
5748 if (value->id == CSSValueNone) {
5749 if (fill || shape || (valueListSize != 1 && !inShorthand()))
5750 return false;
5751 addProperty(CSSPropertyWebkitTextEmphasisStyle, primitiveValueCache()->createIdentifierValue(CSSValueNone), important);
5752 m_valueList->next();
5753 return true;
5754 }
5755
5756 if (value->id == CSSValueOpen || value->id == CSSValueFilled) {
5757 if (fill)
5758 return false;
5759 fill = primitiveValueCache()->createIdentifierValue(value->id);
5760 } else if (value->id == CSSValueDot || value->id == CSSValueCircle || value->id == CSSValueDoubleCircle || value->id == CSSValueTriangle || value->id == CSSValueSesame) {
5761 if (shape)
5762 return false;
5763 shape = primitiveValueCache()->createIdentifierValue(value->id);
5764 } else if (!inShorthand())
5765 return false;
5766 else
5767 break;
5768 }
5769
5770 if (fill && shape) {
5771 RefPtr<CSSValueList> parsedValues = CSSValueList::createSpaceSeparated();
5772 parsedValues->append(fill.release());
5773 parsedValues->append(shape.release());
5774 addProperty(CSSPropertyWebkitTextEmphasisStyle, parsedValues.release(), important);
5775 return true;
5776 }
5777 if (fill) {
5778 addProperty(CSSPropertyWebkitTextEmphasisStyle, fill.release(), important);
5779 return true;
5780 }
5781 if (shape) {
5782 addProperty(CSSPropertyWebkitTextEmphasisStyle, shape.release(), important);
5783 return true;
5784 }
5785
5786 return false;
5787 }
5788
parseLineBoxContain(bool important)5789 bool CSSParser::parseLineBoxContain(bool important)
5790 {
5791 LineBoxContain lineBoxContain = LineBoxContainNone;
5792
5793 for (CSSParserValue* value = m_valueList->current(); value; value = m_valueList->next()) {
5794 if (value->id == CSSValueBlock) {
5795 if (lineBoxContain & LineBoxContainBlock)
5796 return false;
5797 lineBoxContain |= LineBoxContainBlock;
5798 } else if (value->id == CSSValueInline) {
5799 if (lineBoxContain & LineBoxContainInline)
5800 return false;
5801 lineBoxContain |= LineBoxContainInline;
5802 } else if (value->id == CSSValueFont) {
5803 if (lineBoxContain & LineBoxContainFont)
5804 return false;
5805 lineBoxContain |= LineBoxContainFont;
5806 } else if (value->id == CSSValueGlyphs) {
5807 if (lineBoxContain & LineBoxContainGlyphs)
5808 return false;
5809 lineBoxContain |= LineBoxContainGlyphs;
5810 } else if (value->id == CSSValueReplaced) {
5811 if (lineBoxContain & LineBoxContainReplaced)
5812 return false;
5813 lineBoxContain |= LineBoxContainReplaced;
5814 } else if (value->id == CSSValueInlineBox) {
5815 if (lineBoxContain & LineBoxContainInlineBox)
5816 return false;
5817 lineBoxContain |= LineBoxContainInlineBox;
5818 } else
5819 return false;
5820 }
5821
5822 if (!lineBoxContain)
5823 return false;
5824
5825 addProperty(CSSPropertyWebkitLineBoxContain, CSSLineBoxContainValue::create(lineBoxContain), important);
5826 return true;
5827 }
5828
yyerror(const char *)5829 static inline int yyerror(const char*) { return 1; }
5830
5831 #define END_TOKEN 0
5832
5833 #include "CSSGrammar.h"
5834
lex(void * yylvalWithoutType)5835 int CSSParser::lex(void* yylvalWithoutType)
5836 {
5837 YYSTYPE* yylval = static_cast<YYSTYPE*>(yylvalWithoutType);
5838 int length;
5839
5840 lex();
5841
5842 UChar* t = text(&length);
5843
5844 switch (token()) {
5845 case WHITESPACE:
5846 case SGML_CD:
5847 case INCLUDES:
5848 case DASHMATCH:
5849 break;
5850
5851 case URI:
5852 case STRING:
5853 case IDENT:
5854 case NTH:
5855 case HEX:
5856 case IDSEL:
5857 case DIMEN:
5858 case UNICODERANGE:
5859 case FUNCTION:
5860 case ANYFUNCTION:
5861 case NOTFUNCTION:
5862 case CALCFUNCTION:
5863 case MINFUNCTION:
5864 case MAXFUNCTION:
5865 yylval->string.characters = t;
5866 yylval->string.length = length;
5867 break;
5868
5869 case IMPORT_SYM:
5870 case PAGE_SYM:
5871 case MEDIA_SYM:
5872 case FONT_FACE_SYM:
5873 case CHARSET_SYM:
5874 case NAMESPACE_SYM:
5875 case WEBKIT_KEYFRAMES_SYM:
5876
5877 case IMPORTANT_SYM:
5878 break;
5879
5880 case QEMS:
5881 length--;
5882 case GRADS:
5883 case TURNS:
5884 length--;
5885 case DEGS:
5886 case RADS:
5887 case KHERTZ:
5888 case REMS:
5889 length--;
5890 case MSECS:
5891 case HERTZ:
5892 case EMS:
5893 case EXS:
5894 case PXS:
5895 case CMS:
5896 case MMS:
5897 case INS:
5898 case PTS:
5899 case PCS:
5900 length--;
5901 case SECS:
5902 case PERCENTAGE:
5903 length--;
5904 case FLOATTOKEN:
5905 case INTEGER:
5906 yylval->number = charactersToDouble(t, length);
5907 break;
5908
5909 default:
5910 break;
5911 }
5912
5913 return token();
5914 }
5915
recheckAtKeyword(const UChar * str,int len)5916 void CSSParser::recheckAtKeyword(const UChar* str, int len)
5917 {
5918 String ruleName(str, len);
5919 if (equalIgnoringCase(ruleName, "@import"))
5920 yyTok = IMPORT_SYM;
5921 else if (equalIgnoringCase(ruleName, "@page"))
5922 yyTok = PAGE_SYM;
5923 else if (equalIgnoringCase(ruleName, "@media"))
5924 yyTok = MEDIA_SYM;
5925 else if (equalIgnoringCase(ruleName, "@font-face"))
5926 yyTok = FONT_FACE_SYM;
5927 else if (equalIgnoringCase(ruleName, "@charset"))
5928 yyTok = CHARSET_SYM;
5929 else if (equalIgnoringCase(ruleName, "@namespace"))
5930 yyTok = NAMESPACE_SYM;
5931 else if (equalIgnoringCase(ruleName, "@-webkit-keyframes"))
5932 yyTok = WEBKIT_KEYFRAMES_SYM;
5933 else if (equalIgnoringCase(ruleName, "@-webkit-mediaquery"))
5934 yyTok = WEBKIT_MEDIAQUERY_SYM;
5935 }
5936
text(int * length)5937 UChar* CSSParser::text(int *length)
5938 {
5939 UChar* start = yytext;
5940 int l = yyleng;
5941 switch (yyTok) {
5942 case STRING:
5943 l--;
5944 /* nobreak */
5945 case HEX:
5946 case IDSEL:
5947 start++;
5948 l--;
5949 break;
5950 case URI:
5951 // "url("{w}{string}{w}")"
5952 // "url("{w}{url}{w}")"
5953 // strip "url(" and ")"
5954 start += 4;
5955 l -= 5;
5956 // strip {w}
5957 while (l && isHTMLSpace(*start)) {
5958 ++start;
5959 --l;
5960 }
5961 while (l && isHTMLSpace(start[l - 1]))
5962 --l;
5963 if (l && (*start == '"' || *start == '\'')) {
5964 ASSERT(l >= 2 && start[l - 1] == *start);
5965 ++start;
5966 l -= 2;
5967 }
5968 break;
5969 default:
5970 break;
5971 }
5972
5973 // process escapes
5974 UChar* out = start;
5975 UChar* escape = 0;
5976
5977 bool sawEscape = false;
5978
5979 for (int i = 0; i < l; i++) {
5980 UChar* current = start + i;
5981 if (escape == current - 1) {
5982 if (isASCIIHexDigit(*current))
5983 continue;
5984 if (yyTok == STRING &&
5985 (*current == '\n' || *current == '\r' || *current == '\f')) {
5986 // ### handle \r\n case
5987 if (*current != '\r')
5988 escape = 0;
5989 continue;
5990 }
5991 // in all other cases copy the char to output
5992 // ###
5993 *out++ = *current;
5994 escape = 0;
5995 continue;
5996 }
5997 if (escape == current - 2 && yyTok == STRING &&
5998 *(current-1) == '\r' && *current == '\n') {
5999 escape = 0;
6000 continue;
6001 }
6002 if (escape > current - 7 && isASCIIHexDigit(*current))
6003 continue;
6004 if (escape) {
6005 // add escaped char
6006 unsigned uc = 0;
6007 escape++;
6008 while (escape < current) {
6009 uc *= 16;
6010 uc += toASCIIHexValue(*escape);
6011 escape++;
6012 }
6013 // can't handle chars outside ucs2
6014 if (uc > 0xffff)
6015 uc = 0xfffd;
6016 *out++ = uc;
6017 escape = 0;
6018 if (isHTMLSpace(*current))
6019 continue;
6020 }
6021 if (!escape && *current == '\\') {
6022 escape = current;
6023 sawEscape = true;
6024 continue;
6025 }
6026 *out++ = *current;
6027 }
6028 if (escape) {
6029 // add escaped char
6030 unsigned uc = 0;
6031 escape++;
6032 while (escape < start+l) {
6033 uc *= 16;
6034 uc += toASCIIHexValue(*escape);
6035 escape++;
6036 }
6037 // can't handle chars outside ucs2
6038 if (uc > 0xffff)
6039 uc = 0xfffd;
6040 *out++ = uc;
6041 }
6042
6043 *length = out - start;
6044
6045 // If we have an unrecognized @-keyword, and if we handled any escapes at all, then
6046 // we should attempt to adjust yyTok to the correct type.
6047 if (yyTok == ATKEYWORD && sawEscape)
6048 recheckAtKeyword(start, *length);
6049
6050 return start;
6051 }
6052
countLines()6053 void CSSParser::countLines()
6054 {
6055 for (UChar* current = yytext; current < yytext + yyleng; ++current) {
6056 if (*current == '\n')
6057 ++m_lineNumber;
6058 }
6059 }
6060
createFloatingSelector()6061 CSSParserSelector* CSSParser::createFloatingSelector()
6062 {
6063 CSSParserSelector* selector = new CSSParserSelector;
6064 m_floatingSelectors.add(selector);
6065 return selector;
6066 }
6067
sinkFloatingSelector(CSSParserSelector * selector)6068 PassOwnPtr<CSSParserSelector> CSSParser::sinkFloatingSelector(CSSParserSelector* selector)
6069 {
6070 if (selector) {
6071 ASSERT(m_floatingSelectors.contains(selector));
6072 m_floatingSelectors.remove(selector);
6073 }
6074 return adoptPtr(selector);
6075 }
6076
createFloatingSelectorVector()6077 Vector<OwnPtr<CSSParserSelector> >* CSSParser::createFloatingSelectorVector()
6078 {
6079 Vector<OwnPtr<CSSParserSelector> >* selectorVector = new Vector<OwnPtr<CSSParserSelector> >;
6080 m_floatingSelectorVectors.add(selectorVector);
6081 return selectorVector;
6082 }
6083
sinkFloatingSelectorVector(Vector<OwnPtr<CSSParserSelector>> * selectorVector)6084 PassOwnPtr<Vector<OwnPtr<CSSParserSelector> > > CSSParser::sinkFloatingSelectorVector(Vector<OwnPtr<CSSParserSelector> >* selectorVector)
6085 {
6086 if (selectorVector) {
6087 ASSERT(m_floatingSelectorVectors.contains(selectorVector));
6088 m_floatingSelectorVectors.remove(selectorVector);
6089 }
6090 return adoptPtr(selectorVector);
6091 }
6092
createFloatingValueList()6093 CSSParserValueList* CSSParser::createFloatingValueList()
6094 {
6095 CSSParserValueList* list = new CSSParserValueList;
6096 m_floatingValueLists.add(list);
6097 return list;
6098 }
6099
sinkFloatingValueList(CSSParserValueList * list)6100 CSSParserValueList* CSSParser::sinkFloatingValueList(CSSParserValueList* list)
6101 {
6102 if (list) {
6103 ASSERT(m_floatingValueLists.contains(list));
6104 m_floatingValueLists.remove(list);
6105 }
6106 return list;
6107 }
6108
createFloatingFunction()6109 CSSParserFunction* CSSParser::createFloatingFunction()
6110 {
6111 CSSParserFunction* function = new CSSParserFunction;
6112 m_floatingFunctions.add(function);
6113 return function;
6114 }
6115
sinkFloatingFunction(CSSParserFunction * function)6116 CSSParserFunction* CSSParser::sinkFloatingFunction(CSSParserFunction* function)
6117 {
6118 if (function) {
6119 ASSERT(m_floatingFunctions.contains(function));
6120 m_floatingFunctions.remove(function);
6121 }
6122 return function;
6123 }
6124
sinkFloatingValue(CSSParserValue & value)6125 CSSParserValue& CSSParser::sinkFloatingValue(CSSParserValue& value)
6126 {
6127 if (value.unit == CSSParserValue::Function) {
6128 ASSERT(m_floatingFunctions.contains(value.function));
6129 m_floatingFunctions.remove(value.function);
6130 }
6131 return value;
6132 }
6133
createFloatingMediaQueryExp(const AtomicString & mediaFeature,CSSParserValueList * values)6134 MediaQueryExp* CSSParser::createFloatingMediaQueryExp(const AtomicString& mediaFeature, CSSParserValueList* values)
6135 {
6136 m_floatingMediaQueryExp = MediaQueryExp::create(mediaFeature, values);
6137 return m_floatingMediaQueryExp.get();
6138 }
6139
sinkFloatingMediaQueryExp(MediaQueryExp * expression)6140 PassOwnPtr<MediaQueryExp> CSSParser::sinkFloatingMediaQueryExp(MediaQueryExp* expression)
6141 {
6142 ASSERT_UNUSED(expression, expression == m_floatingMediaQueryExp);
6143 return m_floatingMediaQueryExp.release();
6144 }
6145
createFloatingMediaQueryExpList()6146 Vector<OwnPtr<MediaQueryExp> >* CSSParser::createFloatingMediaQueryExpList()
6147 {
6148 m_floatingMediaQueryExpList = adoptPtr(new Vector<OwnPtr<MediaQueryExp> >);
6149 return m_floatingMediaQueryExpList.get();
6150 }
6151
sinkFloatingMediaQueryExpList(Vector<OwnPtr<MediaQueryExp>> * list)6152 PassOwnPtr<Vector<OwnPtr<MediaQueryExp> > > CSSParser::sinkFloatingMediaQueryExpList(Vector<OwnPtr<MediaQueryExp> >* list)
6153 {
6154 ASSERT_UNUSED(list, list == m_floatingMediaQueryExpList);
6155 return m_floatingMediaQueryExpList.release();
6156 }
6157
createFloatingMediaQuery(MediaQuery::Restrictor restrictor,const String & mediaType,PassOwnPtr<Vector<OwnPtr<MediaQueryExp>>> expressions)6158 MediaQuery* CSSParser::createFloatingMediaQuery(MediaQuery::Restrictor restrictor, const String& mediaType, PassOwnPtr<Vector<OwnPtr<MediaQueryExp> > > expressions)
6159 {
6160 m_floatingMediaQuery = adoptPtr(new MediaQuery(restrictor, mediaType, expressions));
6161 return m_floatingMediaQuery.get();
6162 }
6163
createFloatingMediaQuery(PassOwnPtr<Vector<OwnPtr<MediaQueryExp>>> expressions)6164 MediaQuery* CSSParser::createFloatingMediaQuery(PassOwnPtr<Vector<OwnPtr<MediaQueryExp> > > expressions)
6165 {
6166 return createFloatingMediaQuery(MediaQuery::None, "all", expressions);
6167 }
6168
sinkFloatingMediaQuery(MediaQuery * query)6169 PassOwnPtr<MediaQuery> CSSParser::sinkFloatingMediaQuery(MediaQuery* query)
6170 {
6171 ASSERT_UNUSED(query, query == m_floatingMediaQuery);
6172 return m_floatingMediaQuery.release();
6173 }
6174
createMediaList()6175 MediaList* CSSParser::createMediaList()
6176 {
6177 RefPtr<MediaList> list = MediaList::create();
6178 MediaList* result = list.get();
6179 m_parsedStyleObjects.append(list.release());
6180 return result;
6181 }
6182
createCharsetRule(const CSSParserString & charset)6183 CSSRule* CSSParser::createCharsetRule(const CSSParserString& charset)
6184 {
6185 if (!m_styleSheet)
6186 return 0;
6187 RefPtr<CSSCharsetRule> rule = CSSCharsetRule::create(m_styleSheet, charset);
6188 CSSCharsetRule* result = rule.get();
6189 m_parsedStyleObjects.append(rule.release());
6190 return result;
6191 }
6192
createImportRule(const CSSParserString & url,MediaList * media)6193 CSSRule* CSSParser::createImportRule(const CSSParserString& url, MediaList* media)
6194 {
6195 if (!media || !m_styleSheet || !m_allowImportRules)
6196 return 0;
6197 RefPtr<CSSImportRule> rule = CSSImportRule::create(m_styleSheet, url, media);
6198 CSSImportRule* result = rule.get();
6199 m_parsedStyleObjects.append(rule.release());
6200 return result;
6201 }
6202
createMediaRule(MediaList * media,CSSRuleList * rules)6203 CSSRule* CSSParser::createMediaRule(MediaList* media, CSSRuleList* rules)
6204 {
6205 if (!media || !rules || !m_styleSheet)
6206 return 0;
6207 m_allowImportRules = m_allowNamespaceDeclarations = false;
6208 RefPtr<CSSMediaRule> rule = CSSMediaRule::create(m_styleSheet, media, rules);
6209 CSSMediaRule* result = rule.get();
6210 m_parsedStyleObjects.append(rule.release());
6211 return result;
6212 }
6213
createRuleList()6214 CSSRuleList* CSSParser::createRuleList()
6215 {
6216 RefPtr<CSSRuleList> list = CSSRuleList::create();
6217 CSSRuleList* listPtr = list.get();
6218
6219 m_parsedRuleLists.append(list.release());
6220 return listPtr;
6221 }
6222
createKeyframesRule()6223 WebKitCSSKeyframesRule* CSSParser::createKeyframesRule()
6224 {
6225 m_allowImportRules = m_allowNamespaceDeclarations = false;
6226 RefPtr<WebKitCSSKeyframesRule> rule = WebKitCSSKeyframesRule::create(m_styleSheet);
6227 WebKitCSSKeyframesRule* rulePtr = rule.get();
6228 m_parsedStyleObjects.append(rule.release());
6229 return rulePtr;
6230 }
6231
createStyleRule(Vector<OwnPtr<CSSParserSelector>> * selectors)6232 CSSRule* CSSParser::createStyleRule(Vector<OwnPtr<CSSParserSelector> >* selectors)
6233 {
6234 CSSStyleRule* result = 0;
6235 markRuleBodyEnd();
6236 if (selectors) {
6237 m_allowImportRules = m_allowNamespaceDeclarations = false;
6238 RefPtr<CSSStyleRule> rule = CSSStyleRule::create(m_styleSheet, m_lastSelectorLineNumber);
6239 rule->adoptSelectorVector(*selectors);
6240 if (m_hasFontFaceOnlyValues)
6241 deleteFontFaceOnlyValues();
6242 rule->setDeclaration(CSSMutableStyleDeclaration::create(rule.get(), m_parsedProperties, m_numParsedProperties));
6243 result = rule.get();
6244 m_parsedStyleObjects.append(rule.release());
6245 if (m_ruleRangeMap) {
6246 ASSERT(m_currentRuleData);
6247 m_currentRuleData->styleSourceData->styleBodyRange = m_ruleBodyRange;
6248 m_currentRuleData->selectorListRange = m_selectorListRange;
6249 m_ruleRangeMap->set(result, m_currentRuleData.release());
6250 m_currentRuleData = CSSRuleSourceData::create();
6251 m_currentRuleData->styleSourceData = CSSStyleSourceData::create();
6252 m_inStyleRuleOrDeclaration = false;
6253 }
6254 }
6255 resetSelectorListMarks();
6256 resetRuleBodyMarks();
6257 clearProperties();
6258 return result;
6259 }
6260
createFontFaceRule()6261 CSSRule* CSSParser::createFontFaceRule()
6262 {
6263 m_allowImportRules = m_allowNamespaceDeclarations = false;
6264 for (unsigned i = 0; i < m_numParsedProperties; ++i) {
6265 CSSProperty* property = m_parsedProperties[i];
6266 int id = property->id();
6267 if (id == CSSPropertyFontVariant && property->value()->isPrimitiveValue()) {
6268 RefPtr<CSSValue> value = property->m_value.release();
6269 property->m_value = CSSValueList::createCommaSeparated();
6270 static_cast<CSSValueList*>(property->value())->append(value.release());
6271 } else if (id == CSSPropertyFontFamily && (!property->value()->isValueList() || static_cast<CSSValueList*>(property->value())->length() != 1)) {
6272 // Unlike font-family property, font-family descriptor in @font-face rule
6273 // has to be a value list with exactly one family name. It cannot have a
6274 // have 'initial' value and cannot 'inherit' from parent.
6275 // See http://dev.w3.org/csswg/css3-fonts/#font-family-desc
6276 clearProperties();
6277 return 0;
6278 }
6279 }
6280 RefPtr<CSSFontFaceRule> rule = CSSFontFaceRule::create(m_styleSheet);
6281 rule->setDeclaration(CSSMutableStyleDeclaration::create(rule.get(), m_parsedProperties, m_numParsedProperties));
6282 clearProperties();
6283 CSSFontFaceRule* result = rule.get();
6284 m_parsedStyleObjects.append(rule.release());
6285 return result;
6286 }
6287
addNamespace(const AtomicString & prefix,const AtomicString & uri)6288 void CSSParser::addNamespace(const AtomicString& prefix, const AtomicString& uri)
6289 {
6290 if (!m_styleSheet || !m_allowNamespaceDeclarations)
6291 return;
6292 m_allowImportRules = false;
6293 m_styleSheet->addNamespace(this, prefix, uri);
6294 }
6295
updateSpecifiersWithElementName(const AtomicString & namespacePrefix,const AtomicString & elementName,CSSParserSelector * specifiers)6296 void CSSParser::updateSpecifiersWithElementName(const AtomicString& namespacePrefix, const AtomicString& elementName, CSSParserSelector* specifiers)
6297 {
6298 AtomicString determinedNamespace = namespacePrefix != nullAtom && m_styleSheet ? m_styleSheet->determineNamespace(namespacePrefix) : m_defaultNamespace;
6299 QualifiedName tag = QualifiedName(namespacePrefix, elementName, determinedNamespace);
6300 if (!specifiers->isUnknownPseudoElement()) {
6301 specifiers->setTag(tag);
6302 return;
6303 }
6304
6305 CSSParserSelector* lastShadowDescendant = specifiers;
6306 CSSParserSelector* history = specifiers;
6307 while (history->tagHistory()) {
6308 history = history->tagHistory();
6309 if (history->hasShadowDescendant())
6310 lastShadowDescendant = history;
6311 }
6312
6313 if (lastShadowDescendant->tagHistory()) {
6314 lastShadowDescendant->tagHistory()->setTag(tag);
6315 return;
6316 }
6317
6318 // No need to create an extra element name selector if we are matching any element
6319 // in any namespace.
6320 if (elementName == starAtom && m_defaultNamespace == starAtom)
6321 return;
6322
6323 OwnPtr<CSSParserSelector> elementNameSelector = adoptPtr(new CSSParserSelector);
6324 elementNameSelector->setTag(tag);
6325 lastShadowDescendant->setTagHistory(elementNameSelector.release());
6326 lastShadowDescendant->setRelation(CSSSelector::ShadowDescendant);
6327 }
6328
updateSpecifiers(CSSParserSelector * specifiers,CSSParserSelector * newSpecifier)6329 CSSParserSelector* CSSParser::updateSpecifiers(CSSParserSelector* specifiers, CSSParserSelector* newSpecifier)
6330 {
6331 if (newSpecifier->isUnknownPseudoElement()) {
6332 // Unknown pseudo element always goes at the top of selector chain.
6333 newSpecifier->appendTagHistory(CSSSelector::ShadowDescendant, sinkFloatingSelector(specifiers));
6334 return newSpecifier;
6335 }
6336 if (specifiers->isUnknownPseudoElement()) {
6337 // Specifiers for unknown pseudo element go right behind it in the chain.
6338 specifiers->insertTagHistory(CSSSelector::SubSelector, sinkFloatingSelector(newSpecifier), CSSSelector::ShadowDescendant);
6339 return specifiers;
6340 }
6341 specifiers->appendTagHistory(CSSSelector::SubSelector, sinkFloatingSelector(newSpecifier));
6342 return specifiers;
6343 }
6344
createPageRule(PassOwnPtr<CSSParserSelector> pageSelector)6345 CSSRule* CSSParser::createPageRule(PassOwnPtr<CSSParserSelector> pageSelector)
6346 {
6347 // FIXME: Margin at-rules are ignored.
6348 m_allowImportRules = m_allowNamespaceDeclarations = false;
6349 CSSPageRule* pageRule = 0;
6350 if (pageSelector) {
6351 RefPtr<CSSPageRule> rule = CSSPageRule::create(m_styleSheet, m_lastSelectorLineNumber);
6352 Vector<OwnPtr<CSSParserSelector> > selectorVector;
6353 selectorVector.append(pageSelector);
6354 rule->adoptSelectorVector(selectorVector);
6355 rule->setDeclaration(CSSMutableStyleDeclaration::create(rule.get(), m_parsedProperties, m_numParsedProperties));
6356 pageRule = rule.get();
6357 m_parsedStyleObjects.append(rule.release());
6358 }
6359 clearProperties();
6360 return pageRule;
6361 }
6362
createMarginAtRule(CSSSelector::MarginBoxType)6363 CSSRule* CSSParser::createMarginAtRule(CSSSelector::MarginBoxType /* marginBox */)
6364 {
6365 // FIXME: Implement margin at-rule here, using:
6366 // - marginBox: margin box
6367 // - m_parsedProperties: properties at [m_numParsedPropertiesBeforeMarginBox, m_numParsedProperties) are for this at-rule.
6368 // Don't forget to also update the action for page symbol in CSSGrammar.y such that margin at-rule data is cleared if page_selector is invalid.
6369
6370 endDeclarationsForMarginBox();
6371 return 0; // until this method is implemented.
6372 }
6373
startDeclarationsForMarginBox()6374 void CSSParser::startDeclarationsForMarginBox()
6375 {
6376 m_numParsedPropertiesBeforeMarginBox = m_numParsedProperties;
6377 }
6378
endDeclarationsForMarginBox()6379 void CSSParser::endDeclarationsForMarginBox()
6380 {
6381 ASSERT(m_numParsedPropertiesBeforeMarginBox != INVALID_NUM_PARSED_PROPERTIES);
6382 rollbackLastProperties(m_numParsedProperties - m_numParsedPropertiesBeforeMarginBox);
6383 m_numParsedPropertiesBeforeMarginBox = INVALID_NUM_PARSED_PROPERTIES;
6384 }
6385
deleteFontFaceOnlyValues()6386 void CSSParser::deleteFontFaceOnlyValues()
6387 {
6388 ASSERT(m_hasFontFaceOnlyValues);
6389 int deletedProperties = 0;
6390
6391 for (unsigned i = 0; i < m_numParsedProperties; ++i) {
6392 CSSProperty* property = m_parsedProperties[i];
6393 int id = property->id();
6394 if (id == CSSPropertyFontVariant && property->value()->isValueList()) {
6395 delete property;
6396 deletedProperties++;
6397 } else if (deletedProperties)
6398 m_parsedProperties[i - deletedProperties] = m_parsedProperties[i];
6399 }
6400
6401 m_numParsedProperties -= deletedProperties;
6402 }
6403
createKeyframeRule(CSSParserValueList * keys)6404 WebKitCSSKeyframeRule* CSSParser::createKeyframeRule(CSSParserValueList* keys)
6405 {
6406 // Create a key string from the passed keys
6407 String keyString;
6408 for (unsigned i = 0; i < keys->size(); ++i) {
6409 float key = (float) keys->valueAt(i)->fValue;
6410 if (i != 0)
6411 keyString += ",";
6412 keyString += String::number(key);
6413 keyString += "%";
6414 }
6415
6416 RefPtr<WebKitCSSKeyframeRule> keyframe = WebKitCSSKeyframeRule::create(m_styleSheet);
6417 keyframe->setKeyText(keyString);
6418 keyframe->setDeclaration(CSSMutableStyleDeclaration::create(0, m_parsedProperties, m_numParsedProperties));
6419
6420 clearProperties();
6421
6422 WebKitCSSKeyframeRule* keyframePtr = keyframe.get();
6423 m_parsedStyleObjects.append(keyframe.release());
6424 return keyframePtr;
6425 }
6426
invalidBlockHit()6427 void CSSParser::invalidBlockHit()
6428 {
6429 if (m_styleSheet && !m_hadSyntacticallyValidCSSRule)
6430 m_styleSheet->setHasSyntacticallyValidCSSHeader(false);
6431 }
6432
updateLastSelectorLineAndPosition()6433 void CSSParser::updateLastSelectorLineAndPosition()
6434 {
6435 m_lastSelectorLineNumber = m_lineNumber;
6436 markRuleBodyStart();
6437 }
6438
markSelectorListStart()6439 void CSSParser::markSelectorListStart()
6440 {
6441 m_selectorListRange.start = yytext - m_data;
6442 }
6443
markSelectorListEnd()6444 void CSSParser::markSelectorListEnd()
6445 {
6446 if (!m_currentRuleData)
6447 return;
6448 UChar* listEnd = yytext;
6449 while (listEnd > m_data + 1) {
6450 if (isHTMLSpace(*(listEnd - 1)))
6451 --listEnd;
6452 else
6453 break;
6454 }
6455 m_selectorListRange.end = listEnd - m_data;
6456 }
6457
markRuleBodyStart()6458 void CSSParser::markRuleBodyStart()
6459 {
6460 unsigned offset = yytext - m_data;
6461 if (*yytext == '{')
6462 ++offset; // Skip the rule body opening brace.
6463 if (offset > m_ruleBodyRange.start)
6464 m_ruleBodyRange.start = offset;
6465 m_inStyleRuleOrDeclaration = true;
6466 }
6467
markRuleBodyEnd()6468 void CSSParser::markRuleBodyEnd()
6469 {
6470 unsigned offset = yytext - m_data;
6471 if (offset > m_ruleBodyRange.end)
6472 m_ruleBodyRange.end = offset;
6473 }
6474
markPropertyStart()6475 void CSSParser::markPropertyStart()
6476 {
6477 if (!m_inStyleRuleOrDeclaration)
6478 return;
6479 m_propertyRange.start = yytext - m_data;
6480 }
6481
markPropertyEnd(bool isImportantFound,bool isPropertyParsed)6482 void CSSParser::markPropertyEnd(bool isImportantFound, bool isPropertyParsed)
6483 {
6484 if (!m_inStyleRuleOrDeclaration)
6485 return;
6486 unsigned offset = yytext - m_data;
6487 if (*yytext == ';') // Include semicolon into the property text.
6488 ++offset;
6489 m_propertyRange.end = offset;
6490 if (m_propertyRange.start != UINT_MAX && m_currentRuleData) {
6491 // This stuff is only executed when the style data retrieval is requested by client.
6492 const unsigned start = m_propertyRange.start;
6493 const unsigned end = m_propertyRange.end;
6494 ASSERT(start < end);
6495 String propertyString = String(m_data + start, end - start).stripWhiteSpace();
6496 if (propertyString.endsWith(";", true))
6497 propertyString = propertyString.left(propertyString.length() - 1);
6498 Vector<String> propertyComponents;
6499 size_t colonIndex = propertyString.find(":");
6500 ASSERT(colonIndex != notFound);
6501
6502 String name = propertyString.left(colonIndex).stripWhiteSpace();
6503 String value = propertyString.substring(colonIndex + 1, propertyString.length()).stripWhiteSpace();
6504 // The property range is relative to the declaration start offset.
6505 m_currentRuleData->styleSourceData->propertyData.append(
6506 CSSPropertySourceData(name, value, isImportantFound, isPropertyParsed, SourceRange(start - m_ruleBodyRange.start, end - m_ruleBodyRange.start)));
6507 }
6508 resetPropertyMarks();
6509 }
6510
cssPropertyID(const UChar * propertyName,unsigned length)6511 static int cssPropertyID(const UChar* propertyName, unsigned length)
6512 {
6513 if (!length)
6514 return 0;
6515 if (length > maxCSSPropertyNameLength)
6516 return 0;
6517
6518 char buffer[maxCSSPropertyNameLength + 1 + 1]; // 1 to turn "apple"/"khtml" into "webkit", 1 for null character
6519
6520 for (unsigned i = 0; i != length; ++i) {
6521 UChar c = propertyName[i];
6522 if (c == 0 || c >= 0x7F)
6523 return 0; // illegal character
6524 buffer[i] = toASCIILower(c);
6525 }
6526 buffer[length] = '\0';
6527
6528 const char* name = buffer;
6529 if (buffer[0] == '-') {
6530 // If the prefix is -apple- or -khtml-, change it to -webkit-.
6531 // This makes the string one character longer.
6532 if (hasPrefix(buffer, length, "-apple-") || hasPrefix(buffer, length, "-khtml-")) {
6533 memmove(buffer + 7, buffer + 6, length + 1 - 6);
6534 memcpy(buffer, "-webkit", 7);
6535 ++length;
6536 }
6537
6538 #if PLATFORM(IOS)
6539 if (!strcmp(buffer, "-webkit-hyphenate-locale")) {
6540 // Worked in iOS 4.2.
6541 const char* const webkitLocale = "-webkit-locale";
6542 name = webkitLocale;
6543 length = strlen(webkitLocale);
6544 }
6545 #endif
6546 }
6547
6548 const Property* hashTableEntry = findProperty(name, length);
6549 return hashTableEntry ? hashTableEntry->id : 0;
6550 }
6551
cssPropertyID(const String & string)6552 int cssPropertyID(const String& string)
6553 {
6554 return cssPropertyID(string.characters(), string.length());
6555 }
6556
cssPropertyID(const CSSParserString & string)6557 int cssPropertyID(const CSSParserString& string)
6558 {
6559 return cssPropertyID(string.characters, string.length);
6560 }
6561
cssValueKeywordID(const CSSParserString & string)6562 int cssValueKeywordID(const CSSParserString& string)
6563 {
6564 unsigned length = string.length;
6565 if (!length)
6566 return 0;
6567 if (length > maxCSSValueKeywordLength)
6568 return 0;
6569
6570 char buffer[maxCSSValueKeywordLength + 1 + 1]; // 1 to turn "apple"/"khtml" into "webkit", 1 for null character
6571
6572 for (unsigned i = 0; i != length; ++i) {
6573 UChar c = string.characters[i];
6574 if (c == 0 || c >= 0x7F)
6575 return 0; // illegal character
6576 buffer[i] = WTF::toASCIILower(c);
6577 }
6578 buffer[length] = '\0';
6579
6580 if (buffer[0] == '-') {
6581 // If the prefix is -apple- or -khtml-, change it to -webkit-.
6582 // This makes the string one character longer.
6583 if (hasPrefix(buffer, length, "-apple-") || hasPrefix(buffer, length, "-khtml-")) {
6584 memmove(buffer + 7, buffer + 6, length + 1 - 6);
6585 memcpy(buffer, "-webkit", 7);
6586 ++length;
6587 }
6588 }
6589
6590 const Value* hashTableEntry = findValue(buffer, length);
6591 return hashTableEntry ? hashTableEntry->id : 0;
6592 }
6593
6594 // "ident" from the CSS tokenizer, minus backslash-escape sequences
isCSSTokenizerIdentifier(const String & string)6595 static bool isCSSTokenizerIdentifier(const String& string)
6596 {
6597 const UChar* p = string.characters();
6598 const UChar* end = p + string.length();
6599
6600 // -?
6601 if (p != end && p[0] == '-')
6602 ++p;
6603
6604 // {nmstart}
6605 if (p == end || !(p[0] == '_' || p[0] >= 128 || isASCIIAlpha(p[0])))
6606 return false;
6607 ++p;
6608
6609 // {nmchar}*
6610 for (; p != end; ++p) {
6611 if (!(p[0] == '_' || p[0] == '-' || p[0] >= 128 || isASCIIAlphanumeric(p[0])))
6612 return false;
6613 }
6614
6615 return true;
6616 }
6617
6618 // "url" from the CSS tokenizer, minus backslash-escape sequences
isCSSTokenizerURL(const String & string)6619 static bool isCSSTokenizerURL(const String& string)
6620 {
6621 const UChar* p = string.characters();
6622 const UChar* end = p + string.length();
6623
6624 for (; p != end; ++p) {
6625 UChar c = p[0];
6626 switch (c) {
6627 case '!':
6628 case '#':
6629 case '$':
6630 case '%':
6631 case '&':
6632 break;
6633 default:
6634 if (c < '*')
6635 return false;
6636 if (c <= '~')
6637 break;
6638 if (c < 128)
6639 return false;
6640 }
6641 }
6642
6643 return true;
6644 }
6645
6646 // We use single quotes for now because markup.cpp uses double quotes.
quoteCSSString(const String & string)6647 String quoteCSSString(const String& string)
6648 {
6649 // For efficiency, we first pre-calculate the length of the quoted string, then we build the actual one.
6650 // Please see below for the actual logic.
6651 unsigned quotedStringSize = 2; // Two quotes surrounding the entire string.
6652 bool afterEscape = false;
6653 for (unsigned i = 0; i < string.length(); ++i) {
6654 UChar ch = string[i];
6655 if (ch == '\\' || ch == '\'') {
6656 quotedStringSize += 2;
6657 afterEscape = false;
6658 } else if (ch < 0x20 || ch == 0x7F) {
6659 quotedStringSize += 2 + (ch >= 0x10);
6660 afterEscape = true;
6661 } else {
6662 quotedStringSize += 1 + (afterEscape && (isASCIIHexDigit(ch) || ch == ' '));
6663 afterEscape = false;
6664 }
6665 }
6666
6667 StringBuffer buffer(quotedStringSize);
6668 unsigned index = 0;
6669 buffer[index++] = '\'';
6670 afterEscape = false;
6671 for (unsigned i = 0; i < string.length(); ++i) {
6672 UChar ch = string[i];
6673 if (ch == '\\' || ch == '\'') {
6674 buffer[index++] = '\\';
6675 buffer[index++] = ch;
6676 afterEscape = false;
6677 } else if (ch < 0x20 || ch == 0x7F) { // Control characters.
6678 buffer[index++] = '\\';
6679 placeByteAsHexCompressIfPossible(ch, buffer, index, Lowercase);
6680 afterEscape = true;
6681 } else {
6682 // Space character may be required to separate backslash-escape sequence and normal characters.
6683 if (afterEscape && (isASCIIHexDigit(ch) || ch == ' '))
6684 buffer[index++] = ' ';
6685 buffer[index++] = ch;
6686 afterEscape = false;
6687 }
6688 }
6689 buffer[index++] = '\'';
6690
6691 ASSERT(quotedStringSize == index);
6692 return String::adopt(buffer);
6693 }
6694
quoteCSSStringIfNeeded(const String & string)6695 String quoteCSSStringIfNeeded(const String& string)
6696 {
6697 return isCSSTokenizerIdentifier(string) ? string : quoteCSSString(string);
6698 }
6699
quoteCSSURLIfNeeded(const String & string)6700 String quoteCSSURLIfNeeded(const String& string)
6701 {
6702 return isCSSTokenizerURL(string) ? string : quoteCSSString(string);
6703 }
6704
isValidNthToken(const CSSParserString & token)6705 bool isValidNthToken(const CSSParserString& token)
6706 {
6707 // The tokenizer checks for the construct of an+b.
6708 // nth can also accept "n", "odd" or "even" but should not accept any other token.
6709 return equalIgnoringCase(token, "odd") || equalIgnoringCase(token, "even") || equalIgnoringCase(token, "n");
6710 }
6711
6712 #define YY_DECL int CSSParser::lex()
6713 #define yyconst const
6714 typedef int yy_state_type;
6715 typedef unsigned YY_CHAR;
6716 // The following line makes sure we treat non-Latin-1 Unicode characters correctly.
6717 #define YY_SC_TO_UI(c) (c > 0xff ? 0xff : c)
6718 #define YY_DO_BEFORE_ACTION \
6719 yytext = yy_bp; \
6720 yyleng = (int) (yy_cp - yy_bp); \
6721 yy_hold_char = *yy_cp; \
6722 *yy_cp = 0; \
6723 yy_c_buf_p = yy_cp;
6724 #define YY_BREAK break;
6725 #define ECHO
6726 #define YY_RULE_SETUP
6727 #define INITIAL 0
6728 #define YY_STATE_EOF(state) (YY_END_OF_BUFFER + state + 1)
6729 #define yyterminate() yyTok = END_TOKEN; return yyTok
6730 #define YY_FATAL_ERROR(a)
6731 // The following line is needed to build the tokenizer with a condition stack.
6732 // The macro is used in the tokenizer grammar with lines containing
6733 // BEGIN(mediaqueries) and BEGIN(initial). yy_start acts as index to
6734 // tokenizer transition table, and 'mediaqueries' and 'initial' are
6735 // offset multipliers that specify which transitions are active
6736 // in the tokenizer during in each condition (tokenizer state).
6737 #define BEGIN yy_start = 1 + 2 *
6738
6739 #include "tokenizer.cpp"
6740
6741 }
6742